> as lemmas

1615 H. Crooke Μικροκοσμογραϕια 434 The middle part of the scalpe..is gibbous or round..the Latines call it vertex, because in that place the haires runne round in a ring as waters doe in a whirle-poole.]

1634 A. Read Man. Anat. Body of Man iii. i. 145 Vertex the crowne; that which is betweene the former two, somewhat arched.

1680 S. Haworth Ανθροπωλογία 115 The middle Part between these which is Gibbose is called Vertex.

1754–64 W. Smellie Treat. Midwifery I. 86 [In child-birth] the crown or vertex is the first part that is pressed down, because..the bones at that part of the skull make the least resistance.

1771 Encycl. Brit. II. 226/2 The [Columba] turbita, with..a short bill, and a plain vertex.

1840 E. Wilson Anatomist's Vade Mecum (1842) 43 The skull..is divisible into four regions,—a superior region or vertex, a lateral region, an inferior, and an interior region.

1841 F. H. Ramsbotham Princ. & Pract. Obstetr. Med. 135 (heading) Comparative frequency of the various modes of vertex presentation.

1873 E. Coues Birds of Northwest (1874) 281 That the young males have more or less of the vertex red or yellow, instead of an occipital crescent of scarlet.

1888 P. L. Sclater & W. H. Hudson Argentine Ornithol. I. 137 Vertex more or less tinged with rufous.

1899 T. C. Allbutt et al. Syst. Med. VII. 482 In these vertex cases [of tuberculous meningitis].

1899 T. C. Allbutt et al. Syst. Med. VIII. 8 The forceps was employed fifteen times in vertex presentations.

1974 Encycl. Brit. Micropædia VIII. 195/2 In vertex presentations the head of the fetus most commonly faces to the right and slightly to the rear. This position is said to be the most usual one, because the fetus is thus best accommodated to the shape of the uterus.