...In flexion, the leg bends on the thigh;its inferior extremity is directed upwards and backwards;the angle which the tibia naturally forms with the femurbecomes less obtuse... 
Édouard Cuyer 「Artistic Anatomy of Animals」
...Bats without facial membranes; with short obtuse and bull-doggishheads; large lips...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...—"Twenty-six teeth on each side above and below, obtuse,slightly curved inwards; of a uniform shining black above, beneathblackish...
Robert A. Sterndale 「Natural History of the Mammalia of India and Ceylon」
...Wings in both sexes alike, broad, obtuse, rounded, very entire...
William Swainson 「Zoological Illustrations, Volume I」
...Shell nearly cylindrical, carinated, fulvous; spire depressed, concave, spotted, tip acute, the whorls very concave, with numerous subgranulated striæ; base obtuse, striated, with a gibbous belt...
William Swainson 「Zoological Illustrations, Volume II」
...Theyexhibited concentric obtuse ridges on the interiorside, and a large basin-shaped area behind the hinge...
W. E. Webb 「Buffalo Land」
...Rhombus: a quadrangular figure having its four sidesequal and its opposite lines parallel, with two opposite anglesacute and two obtuse...
John. B. Smith 「Explanation of Terms Used in Entomology」
...The nestthen takes the form of a demi-ellipsoid, or, in other words, half an eggcut longitudinally; more or less obtuse at one end, but pointed at theother, and sometimes ending in a short curved tail...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
...Themandibles are black, strong, short, obtuse, only slightly curved,sharp-edged and furnished each with a broad tooth on the inner side...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
...The sensitive scheduleof the Cerambyx-grub, therefore, is limited to taste and touch, bothexceedingly obtuse...
J. H. Fabre 「The Wonders of Instinct」
...Herethey meet at an obtuse angle...
Ernst Haeckel 「The Evolution of Man」
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