. An American text-book of obstetrics. For practitioners and students. oi o p/ 0 ol p pf m Fig. 120.—Brains of human embryos from reconstructions by His. A, brain from fifteen day embryo ;B, from three and a half week embryo ; C, from seven and a half week fetus : fb, ib, tub, hb, ab, fore-, inter-,mid- hind-, and after-brain vesicles : o, optic vesicle; ov, otic vesicle; in, infundibulum ; m, mammillaryprocess; pf, pontine flexure; IVv, fourth ventricle; nk, cervical flexure; ol, olfactory lobe; b, basilarartery ; p, pituitary recess. tures. The brain-vesicle undergoing least change is the mi

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. An American text-book of obstetrics. For practitioners and students. oi o p/ 0 ol p pf m Fig. 120.—Brains of human embryos from reconstructions by His. A, brain from fifteen day embryo ;B, from three and a half week embryo ; C, from seven and a half week fetus : fb, ib, tub, hb, ab, fore-, inter-,mid- hind-, and after-brain vesicles : o, optic vesicle; ov, otic vesicle; in, infundibulum ; m, mammillaryprocess; pf, pontine flexure; IVv, fourth ventricle; nk, cervical flexure; ol, olfactory lobe; b, basilarartery ; p, pituitary recess. tures. The brain-vesicle undergoing least change is the mid-brain, since itswalls remain uncleft and retain their primary relations to the enclosed canal. B. eg cb—

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Keywords: ., bookcentury1800, bookdecade1890, booksubjectobstetrics, bookyear1