...There are three varieties, spiral, univalve, and bivalve... 
David Livingstone 「Missionary Travels and Researches in South Africa」
...Animal marine, carnivorous; body spiral, with a compressed foot at the inferior base of the neck...
William Swainson 「Zoological Illustrations, Volume I」
...Outer lip smooth within, deeply lobed above, attached to the second spiral volution...
William Swainson 「Zoological Illustrations, Volume I」
...The aperture is more round than ovate, and is less than one half the total length of the shell; the outer lip much reflected, and the transverse bands on the spiral whirls nearly obsolete...
William Swainson 「Zoological Illustrations, Volume I」
...I thought at first that the horns made morethan one complete spiral, but, on leveling themcarefully, I saw that the entire curve would notbe complete without the points, which weresmashed off...
Various 「Hunting in Many Lands」
...In the first of these, the end joints of the antennæ are rolled up in more or less of a spiral (fig...
Edward Saunders 「Wild Bees, Wasps and Ants」
...Thetentacles may be drawn completely within these sacs, or be extendedoutside, as we have seen, to a greater or less degree, and in everyvariety of curve or spiral...
Elizabeth Cabot Cary Agassiz 「Seaside Studies in Natural History」
...Weshall call it the Spiral Conferva, its scientific namebeing Spirogyra quinina...
Henry J. Slack 「Marvels of Pond-life」
...When he came at last to the little open whereCarvel's fire was still sending a spiral of spruce-scented smoke upinto the air it was with a stealth that failed even to rouse Baree...
James Oliver Curwood 「Baree, Son of Kazan」
...When a Heron passes, a cast or couple of Falcons are thrown off,which dart into the air, flying in a spiral direction to get above theHeron...
Rev. C. A. Johns 「British Birds in their Haunts」
...In autumn, after sunset, they are in the habit ofrising into the air with a spiral ascent, so high that they are lostsight of...
Rev. C. A. Johns 「British Birds in their Haunts」
...Antlia: the spiral tongue or haustellum ofLepidoptera...
John. B. Smith 「Explanation of Terms Used in Entomology」
... It may be that these things are all vain; and that our own spiral of light, no less than that of the bees, has been kindled for no other purpose save that of amusing the darkness...
Maurice Maeterlinck 「The Life of the Bee」
...In such cases the series ofapertures follows a spiral curve...
J. H. Fabre Bernard Miall 「Social Life in the Insect World」
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