Evenings at the microscope : or, Researches among the minuter organs and forms of animal life (1884)
Gosse, Philip Henry, 1810-1888 · London : Society for Promoting Christian Knowledge · leaf 67
as the vitreous humour. In the front partof the eye there is a crystalline lens, a small, circular,nattish body, shaped like a lens, perfectly clear and trans-lucent, but a little more solid than the vitreous humour.Now protection for these so delicate organs is providedin a way quite different… … STRUCTURE OF EYE OF SNAIL. most curious process of inversion. This action is per-formed by means of a long muscular ribbon, which origi- MOLLUSCA : THEIR EARS. 55 nates from the great muscle that retracts the head withinthe shell, and which is inserted into the extremity of thehollow tentacle. When…
Zoology · Microscopy
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