...The crown of thehead is densely covered with bristly hairs, regularly disposed andsomewhat elongated on the vertex so as to resemble a cap, whence thename... 
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Cuneus: Hymenoptera; the small triangular area at theend of the embolium of hemelytra: Odonata, the small triangle ofthe vertex between the compound eyes...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Epicranium: the upper part of the head from the frontto the neck: often used to include front, vertex and genae:=calva...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Facial angle: the angle formed by the junction of theface and vertex...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Frontal fastigium: in Orthoptera, that process of theface extending dorsad between the antennae and meeting or nearlymeeting the fastigium of the vertex in Tettigidae...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Holoptic: Diptera in which the eyes of male arecontiguous between vertex and antennae: see dichoptic...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Median foveola: in Orthoptera; the foveate depressionof the vertex between the eyes: = central foveola...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Synciput: that portion of the vertex lying between theeyes...
John. B. Smith 「Explanation of Terms Used in Entomology」
...Vertical triangle: in male Diptera, the small triangleupon which the ocelli are situated; limited behind by vertex, infront by eyes...
John. B. Smith 「Explanation of Terms Used in Entomology」
...,partial shadow—which is shown in by thebroken lines tangent to the sun and moon, and crossing atthe point V, which is the vertex of this cone...
George C. Comstock 「A Text-Book of Astronomy」
...A parallel beam passing through a lens becomes conical; but instead of asingle cone it is a sheaf or nest of cones, all having the edge of thelens as base, but each having a different vertex...
Oliver Lodge 「Pioneers of Science」
...Gemma, sometimes called Alphacca, forms with the stars Seginus andArcturus, in Boötes, an isosceles triangle, the vertex of which is atArcturus...
William Tyler Olcott 「A Field Book of the Stars」
...But special points, like focus or vertex, count as twoordinary ones...
Oliver Lodge 「Pioneers of Science」
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