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ment in the ocean took place. The following is a more detailed account of the instrument he finally employed, abridged from the Philosophisal Transactions, 1820, p. ii.

The end B, see diagram, of a cylinder A, three inches wide and eighteen long, being made watertight by a plate firmly soldered to it, a cap C, also water-tight, was made to screw on and off. The rod D, f of an inch in diameter, and carrying a flexible ring a, was made to pass through a tight stuffing box E. A cannon D, fig. 12, capable of containing the piezometer, was fixed vertically in the earth, the touch-hole being plugged tight, and the muzzle about eighteen inches above ground. A strong cap, A, was firmly screwed on at the mouth, and in the centre of it a small forcing pump B, with a piston five-eighths of an inch in diameter, was tightly screwed. A valve was introduced at the aperture C, to ascertain the degree of pressure, one pound of pressure on that valve indicating an atmosphere. The piezometer being introduced into the cannon, the water was forced in till the

A

E. a

B

cap showed signs of leakage, the valve at the same time indicating a pressure of 100 atmospheres. When the piezometer was taken out of the cannon, the flexible ring a was eight inches up the rod D, which proved that the rod had been forced that length into the cylinder, and that the compression was about one per cent. In order to produce this compression, three per cent. must be pumped into the gun, an effect arising from the expansion of the gun, or the entrance of the water into the pores of the cast-iron. On his voyage to England, Mr. Perkins repeated this experiment frequently, and with the same result, by sinking the piezometer with fifty-four pounds of lead, to the depth of 500 fathoms, which gives nearly a pressure of 100 atmospheres.

Being satisfied that the above piezometer would not show all the compression, he made another, consisting of a small tube, closed at the lower end, and water-tight. At the upper end the water entered through a small aperture, closed by a sensible valve opening inwards. It was then perfectly filled with water (the weight of which was accurately known), and subjected in a hydraulic press to a pressure of about 326 atmospheres. When taken out and weighed, there was found an increase of water amounting to three and a half per cent. This water had been previously boiled, and cooled down 48°, and kept at that temperature during the experiment, which was performed before many scientific individuals. Mr. Perkins made several curious experiments, by sinking strong empty porter bottles to different depths; but we must refer for an account of these to the Philosophical Transactions, as they do not contain any very precise results.

PIG, n. s. Sax. pic; Belg. bigge. A young sow or boar; an oblong mass of lead or unforged metal, or sodden ore. See Sow.

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PIG OF LEAD, the eighth part of a fother, amounting to 250lbs. weight.

PIGALLE (John Baptist), a celebrated sculptor, born at Paris in 1714. He became chancellor of the academy of painting and knight of St. Michael. He went to Italy, and returned inspired with the genius of the great artists. His most valued works are a Mercury and a Venus, which he made by order of Louis XV., as presents to the king of Prussia. He also carved a statue of Voltaire, with many other admired pieces. He died at Paris in 1785.

PIGANIOL DE LA FORCE, (John Aymar de), a native of Auvergne, of a noble family, who applied himself with ardor to the study of geograHe also phy, and of the history of France. travelled for improvement. His chief works are, 1. An Historical and Geographical Description of France; the largest edition is that of 1753, in 15 vols. 12mo. 2. A Description of Paris, in 10 vols. 12mo. ; of which he published an abridgment, in 2 vols. 12mo. 3. A Description of the Castle and Park of Versailles, Marly, &c., in 2 vols. 12mo. Piganiol had also a concern with abbé Nadal in the Journal of Trevoux. died at Paris in February, 1753, aged eighty. He was as much respected for his manners as for his talents. To a profound and varied knowledge he united a great probity and honor, and all the politeness of a courtier.

PIGEON, n. s.

He

? Fr. pigeon; Ital. PIGEON-LIVERED, adj. Spiccione, qu. Latin pipio? A fowl; the COLUMBA of Linnæus, which see: pigeon-livered means mild, gentle, and sometimes cowardly, or tame, like this bird.

A turtle dove and a young pigeon.

Genesis xv. 9. This fellow picks up wit as pigeons peas.

Shakspeare.

I am pigeonlivered, and lack gall. To make oppression bitter. Id. Hamlet. Perceiving that the pigeon had lost a piece of her tail, through the next opening of the rocks rowing with all their might, they passed safe, only the end of their poop was bruised. Raleigh.

Fixed in the mast, the feathered weapon stands, Dryden. The fearful pigeon flutters in her bands. See the Cupola of St. Paul's covered with both sexes, like the outside of a pigeon-house. Addison. This building was designed a model, Or of a pigeon-house or oven,

To bake one loaf, or keep one dove in. Swift. PIGEON, in ornithology, see COLUMBA. The varieties of the common pigeon, enumerated by Linnæus, amount to twenty-one; but those of the pigeon fanciers to more than double that number. The ring-dove (C. palumbus, L.), and

the turtle-dove (C. turtur), with the greater num- birds of the pigeon-kind, differs from all others. ber of the varieties, are cultivated only by a few The pigeon has the largest crop of any bird, for persons known as pigeon fanciers: but the com- its size; which is also quite peculiar to the kind. mon pigeon of different colors is cultivated for In two that were dissected by an eminent anathe table. The flesh of the young is very savory tomist it was found that, upon blowing the air and stimulating, and highly valued for pies; that into the windpipe, it distended the crop or gullet of the full aged pigeon is more substantial, to an enormous size. Pigeons live entirely upon harder of digestion, and heating. Black or dark grain and water; these, being mixed together in feathered pigeons are dark fleshed, and of high the crop, are digested in proportion as the bird flavor, inclining to the game bitter of the wild lays in its provisions. Young pigeons are very pigeon. Light colored feathers denote light and ravenous, which necessitates the old ones to h delicate flesh. The dung of pigeons is used for in a more plentiful supply than ordinary, and to tanning upper leathers for shoes; it is also an give it a sort of half maceration in the crop, ts excellent manure. It is so highly prized in make it fit for their tender stomachs. The noPersia that many pigeon-houses are erected at a merous glands, assisted by air and the heat of distance from habitations for the sole purpose of the bird's body, are the necessary apparatus for collecting this manure. They are large round secreting a sort of pap, or milky fluid (com towers, broader at the bottom than at the top, monly called pigeon's milk), but as the food maand crowned by 'conical spiracles through which cerates, it also swells, and the crop is considerthe pigeons descend. Their interior resembles ably dilated. If the crop were filled with solid a honeycomb, forming thousands of holes for substances, the bird could not contract it; but it nests; and the outsides are painted and orna- is obvious the bird has the power to compress mented. The dung is applied almost entirely to its crop at pleasure, and, by discharging the air, the rearing of melons, a fruit most rapidly raised can drive the food out also, which is forced up in scarce seasons; and hence the reason that the gullet with great ease. The young usuniy during the famine of Samaria a cab of dove's receives this tribute of affection from the crop dung was sold for five pieces of silver. (2 Kings three times a day. The male for the most part vi. 25). The Persians do not eat the bird. Pi- feeds the young female, and the old female pergeons are now much less cultivated than formerly, forms the same service for the young malebeing found injurious to corn fields, and espe- While the young are weak, the old ones supply cipally to fields of peas. They are, however, them with food macerated suitably to their tenvery ornamental; a few may be kept by most der frame; but, as they gain strength, the parents farmers, and fed with the common poultry, and give it less preparation, and at last drive them some who breed domestic fowls on a large scale out, when a craving appetite obliges them to may, perhaps, find it worth while to add the shift for themselves; for, when pigeons have pigeon to their number. The gray pigeon is plenty of food, they do not wait for the total most suitable for the common pigeon-house; it dismission of their young; it being a common generally shows fruitfulness by the redness of thing to see young ones fledged, and eggs hatching the eyes and feet, and by the ring of gold color at the same time and in the same nest. Pigeons which is about the neck. are granivorous, and very delicate and cleanly in their diet; they will sometimes eat green aromatic vegetables, but are fondest of seeds; and tares, and the smallest kind of horse-beans, are the most suitable food both in point of economy and fattening qualities.

Stocking of pigeon-houses is best performed in May or August, as the birds are then in the best condition. Young birds called squeakers should be chosen, as the old are apt to fly away. The pigeon lays in breeding two white eggs, which produce young ones of different sexes. When the eggs are laid, the female sits fifteen days, not including the three days she is employed in laying, and is relieved at intervals by the male. The turns are generally pretty regular. The female usually sits from about five in the evening till nine the next morning; at which time the male supplies her place, while she is seeking refreshment abroad. Thus they sit alternately till the young are hatched. If the female does not return at the expected time, the male seeks her, and drives her to the nest; and, should he in his turn be neglectful, she retaliates with equal severity. When the young ones are hatched, they only require warmth for the first three days; a task which the female takes entirely upon herself, and never leaves them except for a few minutes to take a little food. After this they are fed about ten days with what the old ones have picked up in the fields, and kept treasured in their crops, whence they satisfy the craving appetite of their young ones, who receive it very greedily. This way of supplying the young with food from the crop, in

Pease, wheat, buck-wheat, and even barley oats, &c., are also eaten by pigeons, but old tares may be reckoned their best food, says Mr. Loudon; new tares, pease, or beans, are reckoned scouring. Wherever pigeons are kept, the best way to keep them chiefly at home, and thereby both prevent their being lost and their doing injury to corn-crops, is to feed them well; the is also the only way in which, in modern times, they will afford abundance of fat and delicate squabs for the table, which, well fed, they will do every month in the year, and thus afford a constant supply of delicate stimulating food. Pigeons are generally fed in the open air adjoining their cote or house; but in inclement weather, or to attach new pigeons to their home, both food and water should be given alternately. That this may be done without waste, and without frequently disturbing the birds, two contrivances are in use; the first is the meat-box or hopper, whence grain or pulse descends from the hopper as eaten out of a small shallow box; the next is the water-bottle, an ovate, long, naked bottle, reversed in a small basin to which

it serves as a reservoir. Any bottle will do, but the pigeons are apt to alight on and dirty such as when reversed present a flat top. Pigeons being fond of salt, what is called a pigeon-cat is often placed in the midst of the pigeon-house, or in the open air near it. It seems these birds are fond of salt and hot substances, and constantly swallow small stones to promote digestion. The salt-cat is thus composed gravel or drift-sand, unctuous loam, the rubbish of an old wall, or lime, a gallon of each; should lime be substituted for rubbish, a less quantity of the former will suffice; one pound of cummin-seed, one handful of bay-salt; mix with stale urine. Enclose this in jars, corked or stopped, holes being punched in the sides, to admit the beaks of the pigeons. These may be placed abroad. They are very fond of this mixture, and it prevents them from pecking the mortar from the roofs of their houses, which they are otherwise very apt to do. Cleanliness is one of the first and most important considerations in a dove

cote.

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Pigeons are protected by the legislature. By the 1 James, c. 27, whosoever shall shoot at, kill, or destroy, any dove or pigeon, with any gun or bow, or take, kill, or destroy the same with setting dogs or nets, or any snares, engines, or instruments whatsoever, shall, on being convicted before two justices, by confession, or oath of two witnesses, be commited to gaol for three months, or pay for the use of the poor 20s. for every pigeon; or, after this commitment become bound by recognizance, with two sureties, before two justices, in £20 each, not to offend in like manner again. And by the 2 Geo. III. c. 29, any person who shall shoot at, or by any means kill or take, with a wilful intent to destroy, any pigeon, he shall on conviction thereof, by confession, or oath of one witness, before one justice, forfeit 20s. to the prosecutor; and, if not immediately paid, such justice shall commit him to the house of correction, for any term not exceeding three months, nor less than one, unless the penalty be sooner paid. Persons who are convicted on this act shall not be convicted by any former act, and prosecutions on this act must be commenced within two months after the offence was committed. These two abstracts are given to inform the keepers of pigeons of the laws in force to protect them; but more especially to remove the vulgar error,so prevalent among the lower class of people, that pigeons are a nuisance, that they destroy a great deal of seed in the fields, grain in the rick-yards, and loosen the tiles on the tops of buildings; and that any person may shoot them, provided that he does not carry them away.

They are of three kinds, small boarded cases fixed on posts, trees, or against the ends of houses: lofts fitted up with holes or nests; and detached buildings. The first are generally too small to contain a sufficient brood, and are also too subject to variations of temperature; and the last, on the other hand, are now-a-days too large, and therefore the most suitable for the farmer is a loft or tower rising from a building in which no noisy operation is carried on. The lofts of any of the farm-buildings at a distance from the threshing-machine are suitable, or a loft or tower over any detached building will answer PIGEON (Peter Charles Francis), curate and well; but the best situation of all is a tower afterwards rector or vicar of Bayeux, one of the raised from the range of poultry-buildings, numberless victims who fell a sacrifice to Jacowhere there is such a range, as the pigeons can bin rage and infidelity, in the beginning of the thus be more conveniently treated, and will feed French revolution. Although a man of not only very readily with domestic poultry. For a tower sincere piety, but of uncommon mildness and of this sort, the round form should be preferred humanity, yet, because he refused to take the to the square; because the rats cannot so easily oaths imposed by the republicans, he and his come at them in the former as in the latter. It family were at first insulted and persecuted in is also much more commodious; as, by means the cruellest manner, and he himself was at last of a ladder turning round upon an axis, it murdered on the 20th of August, 1793, in his is possible to visit all the nests in the house, thirty-eighth year. without the least difficulty; which cannot be so easily done in a house of the square form. And

in order to hinder rats from climbing up the outside of it, the wall should be covered with tinplates to a certain height, as about a foot and a half; which should project out three or four inches at the top, to prevent more effectually their getting up. A common mode in France is to raise a boarded room on a strong post, powerfully braced, the interior sides of which are lined with boxes for the birds, and the exterior east and west sides with balconies, or sills for them to alight on and enter to their boxes. The north and south sides are lined with boxes inside, but without openings, as being too cold on the one front, and too warm on the other. The interior must be lined with nests or holes, subdivided either by stone, as in the ancient mural pigeon-houses; by boards; or each nest composed of a vase or vessel of earthenware fixed on its side. Horizontal shelves divided vertically at three feet distance, are generally esteemed preferable to every other mode.

PIGEON PEA. See CYTISUS.

PIGEON FOOT is a species of geranium.

PIGHIUS (Stephen Vinand), a learned antiquary, born at Campen in Overyssel, in 1520. He went to Rome, and was patronised by cardinal Granvelle, who made him his librarian. The learned are indebted to him for the first good edition of Valerius Maximus, in 1585, 8vo. He became preceptor to prince Charles of Juliers, who dying, he wrote a panegyric upon him, on which his father, prince William, made him canon of Santen, where he died in 1604, aged eighty-four. His Annales, seu Fasti Romanorum Magistratuum et Provinciarum, were published by Schottus in 1615, in 3 vols. folio.

PIGHT, old preter, and part. pass. of pitch. See PITCH.

PIGMENT, n. s. Lat. pigmentum. Paint; color to be laid on any body.

Consider about the opacity of the corpuscles of black pigments, and the comparative diaphaneity of Boyle.

white bodies.

PIGMENTUM, from pingo, to paint, pigment. This name is given by anatomists to a mucous substance found in the eye, which is of two kinds. The pigment of the iris is that which covers the anterior and posterior surface of the iris, and gives the beautiful variety of color in the eyes. The pigment of the choroid membrane is a black or brownish mucus, which covers the anterior surface of the choroid membrane, contiguous to the retina and the anterior surface of the ciliary processes.

PIGMY, n. s. Fr. pigmée; Lat. pygmæus; Gr. TUYμalog. A small nation, fabled to be devoured by the cranes; thence any thing mean or inconsiderable.

Of so low a stature, that, in relation to the other, they appear as pigmies. Heylin. When cranes invade, his little sword and shield The pigmy takes. Dryden's Juvenal. The criticks of a more exalted taste, may discover such beauties in the ancient poetry, as may escape the comprehension of us pigmies of a more limited

genius.

But that it wanted room,

Garth.

It might have been a pigmy's tomb. Swift. PIGNEAUX (N.), late bishop of Audran, was born in the department of the Aisne, in France, 1740. He went in 1770, with the authority of the pope, as a missionary to Cochin China, and gained the esteem of the king, CaungSchung, who confided to him the education of his only son. The troubles which disturbed the empire of his protector, obliged him to fly to the town of Sat-Gond, whence he proposed invoking the assistance of France. The king had been surprised by three ambitious brothers, who overthrew his empire and forced him to seek an asylum in the isle of Pulo-Wa. In 1787 the bishop departed for France, taking his pupil with him, and formed an offensive and defensive league between France and Cochin China, returning with the title of ambassador extraordinary to that kingdom. Before his arrival in Cochin China, the Revolution broke out, and all help was refused him. Still he did not lose his courage, but, going to the isle of Pula-Wa, brought thence Caung-Schung, who, profiting by the discontent of his subjects, regained his empire in 1790. He now created Pigneaux his first minister, and under his direction founded several manufactories. The bishop translated for him a Treatise on Tactics, instituted schools, to which fathers of families were obliged to send their children at the age of four years, and died in 1800, when Caung-Schung caused him to be interred with the highest funeral honors of the

Cochin-Chinese.

PIGNORIUS (Lawrence), a learned Italian, born at Padua in 1571, and bred an ecclesiastic. He made deep researches into antiquity, and published several curious works in Italian and Latin, particularly Mensa Isiaca, on the antiquities of Egypt. The great Galileo procured him the offer of a professorship at Pisa, but he declined it. In 1630 he was made a canon in Treviso, but died of the plague in 1631. PIG'NUT, n. s. Pig and nut. An earth

nut.

I with my long nails will dig thee pignuts. Shakspeare.

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PIGUS, in ichthyology, a species of leathermouthed fish, very much resembling the common carp; being of the same shape and size, and its eyes, fins, and fleshy palate, exactly the same; from the gills to the tail there is a crooked dotted line; the back and sides are bluish, and the belly reddish. It is covered with large scales, from the middle of each of which there rises a fine pellucid prickle, which is very sharp. It is an excellent fish for the table, being perhaps preferable to the carp: and it is in season in the months of March and April. It is caught in lakes in some parts of Italy, and is mentioned by Pliny, though without a name. Artedi says it is a species of cyprinus, and he styles it the cyprinus called piclo and pigus.

PIGWID'GEON, n. s. Used by Drayton as the name of a fairy, and is a kind of cant word any thing petty or small.

for

Where is the Stoick can his wrath appease, To see his country sick of Pym's disease; By Scotch invasion to be made a prey To such pigwidgeon myrmidons as they?

Cleaveland.

PI-HAHIROTH, a mouth or narrow pass between two mountains, called Chiroth or Eiroth, and lying not far from the bottom of the west coast of the Arabian Gulph; before which the children of Israel encamped, just before their entering the Red Sea.

PIISSKER, in ichthyology, is a fish of the mustela kind, commonly called the fossil mustela, or fossil fish. They are generally found as long as a man's hand is broad, and as thick as one's finger; but they sometimes grow much longer: the back is gray with a number of spots and traverse streaks, partly black and partly blue; the belly is yellow, and spotted with red, others look as if they were made with the point white, and black; the white are the larger, the of a needle; and there is on each side a longitudinal black and white line. There are some fleshy excrescences at the mouth, which are expanded in swimming, but contracted when out the earth, in the sides of rivers, in marshy of the water. These fishes run into caverns of places, and penetrate a great way, and are often dug up at a distance from waters. Often, when the waters of brooks and rivers swell beyond their banks, and again cover them, they make their way out of the earth into the water; and, when it deserts them, they are often left in vast numbers upon the ground, and become a prey to swine. It is thought to be much of the same kind with the fisgum fish; and it is indeed possible that the pæcilia of Schonefeldt is the same.

PIKE, n. s. Fr. picque, his snout being sharp.' Skinner and Junius. The popular name of the esox lucius..

The luce or pike is the tyrant of the fresh waters: Sir Francis Bacon observes the pike to be the longest lived of any fresh water fish, and yet he computes it

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