...method, thought and practice of chiropractors, as taught in recognized chiropractic schools and colleges, but shall not prescribe for or administer to any person any medicine or drugs, nor practice osteopathy or surgery. Licensed chiropractors may practice in public hospitals....

...this provision: "Any chiropractor who has complied with the provisions of this act may adjust by hand any displaced tissue of any kind or nature, but shall...prescribe for or administer to any person, any medicine or drugs now or hereafter included in materia medica, perform any minor surgery, only as hereinbefore...

...of this Act may adjust by hand 1923 the articulations of the spinal column, but shall not prescribe or administer to any person any medicine or drug now or hereafter included in materia medica, perform any surgery, except as hereinabove stated, nor practice obstetrics or osteopathy. Sec. 13....

...who has complied with the provisions of this Act may adjust by hand any articulation of the spine, but shall not prescribe for or administer to any person any medicine or drugs now or hereafter included in materia medica, perform any minor surgery only as hereinbefore stated,...

...who has complied with the provisions of this act may adjust by hand any articulation of the spine, but shall not prescribe for or administer to any person any medicine or drugs now or hereafter included in Materia Medica, nor practice obstetrics, nor practice osteopathy...