...It approaches in general form the Dutch Pouter, but the inflated œsophagus assumes a spherical form, as if the pigeon had swallowed a large orange, which had stuck close under the beak... 
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...50) varies greatly in shape, being oval, nearly spherical, or cylindrical, more or less swollen in the upper part, or constricted round the middle, and either straight or curved...
Charles Darwin 「The Variation of Animals and Plants Under Domestication, Vol. I.」
...This is certainly the rawmaterial of the frothy spittle, the glue that binds the grains ofsand together and consolidates them into a spherical whole...
Jean Henri Fabre Alexander Teixeira de Mattos 「The Glow-Worm and Other Beetles」
... Their spherical configuration is therefore very practical...
J. Henri Fabre 「Bramble-bees and Others」
...The nest cavity is a chamber of approximately spherical shapeand from 17 to 23 centimeters in diameter...
Charles T. Vorhies and Walter P. Taylor 「Life History of the Kangaroo Rat」
...With aquatic plants it constructs a spherical nest and arranges it in the midst of the reeds, level with the water...
Frédéric Houssay 「The Industries of Animals」
...As the gastrulation proceeds a large spherical blastula is formed from thispeculiar solid amphigastrula of the placental, as we saw in the case of themarsupial...
Ernst Haeckel 「The Evolution of Man」
...As Hatschek afterwards found (1879), thesegmentation-cells only remain equal up to the morula-stage, the spherical bodyof which consists of thirty-two cells...
Ernst Haeckel 「The Evolution of Man」
...And so with the firmament and the otherconstellations, they move round the earth and sea in glittering array,completing their orbits according to the spherical shape of the heaven...
Vitruvius 「Ten Books on Architecture」
... The outer lens is a meniscus--that is bounded by aconcave and convex spherical surface which meet--having a focal lengthof 18 inches...
Henry H. Snelling 「The History and Practice of the Art of Photography」
...“At the earliest period of the employment of the camera obscura, adouble-convex lens was used to produce the image; but this form was soonabandoned, on account of the spherical aberration so caused...
Samuel D. Humphrey 「American Handbook of the Daguerrotype」
...It had been smoothly spherical before; it heaved itself into strangeprotuberances as he watched...
Charles Willard Diffin 「The Finding of Haldgren」
...They stood in a spherical chamber of silvery metal, Bert and thisgiant, and the gentle vibration of delicately balanced machinery madeitself felt in the structure...
Harl Vincent 「Wanderer of Infinity」
...The orbs that circle round the Sun are opaque bodies, spherical inshape, receiving their light and heat from the central star, on whichthey absolutely depend...
Camille Flammarion Frances A. Welby 「Astronomy for Amateurs」
...Hipparchus was also the inventor of trigonometry, both plane and spherical...
George Forbes 「History of Astronomy」
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