The following are photographic reproductions of Exhibits M2, M, N, and II, referred to in the opinion, being photographs of four models made by Bowers in 1868:

The following are copies of the drawings and memoranda referred to in the opinion as Exhibits DD and EE, being original drawings made by Bowers on July 13, 1864, and July 14, 1864, respectively:

916198 Exhibit D.D. Stipulated into Cause of Bowers vs. Von Schmidt.

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San Francisco July 13, A. Rotary Excavator The.. having an opening into an in bottom from which a short pipe a large, strong suction. Centrifugal Pump. These thy will easy a heavy percent tion pipe may send a strong

AD. 1304 Studied this out after I went to bed last night.

Buckets have no bottoms but revolve around a stationary water. tight dram Furiorhopper or mud receiver. This hopper is curved to form a half circle at the pipe leads out through the side of the hollow stationary dram, and from this hose passes around the baw of the boat and is secured to the suction pipe ofe pumpe have no valves and coarse substances can pass through them. I believe age of mud and sund becaus they take up lan bark without difficulty. An injios jet through the bottom of the hopper to cut it up of necessary. The bucket. wheel and interior drum rises in a sliding frame between upright guides. I am of the opinion that the onslu. pump alone will do the work because a large amount of water will come up with the mud and as the hopper an deep think the weight of mud and water would force the water into the stream from the force-pump and the and then on the other. But this makes a wedge shaped cut requiring two full swings to make one full cut. alone would also handle a large amount of mud The dredgeswings on anrtical anchor or on two first on on I think leun find some way to get around this I have shown this sketch to ser would think well of it; but they seem to have no faith in it. Some think the panple Some think the friction of the mud on inner dram will prevent sumess. The away with the inner drum and usung hinged falling bottorno arranged to cally. I have the utmost faith in the combination of elements here do my utmost perfect, patent and profit from it. I can make a Ditch. tiple of inward delivery to an endless carrier. Perhap an outward delin kry will to make enough from ditcher to enable me to retain patent for dredge. Will try it ∙lay this carefully away. I can do nothing with it now, but I will some day.

eral persons whom I though

will not handle the mud,
Last can be obviated by doing
open and shut automati
and as soon as I can wall
ing machine on this prin
do for a ditchen I may be able
also as I can. In meantime
Preserve Carfully

Made Pencil sketch of bottomd hinged to open and close automar Foolly today. July 14. 1864 with stationary hopper and screen between two hubs and two auto og opolas The hopper forms a preasure collumos in this can. but emptys into stationary hollow asto oven urt whit the wheel revolves AB Stowers.