The book Secrets of Earth And Sea was written by author Lankester, E. Ray (Edwin Ray), Sir, 1847-1929 Here you can read free online of Secrets of Earth And Sea book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Secrets of Earth And Sea a good or bad book?
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35 and 36, by re- ference to actual specimens kindly given to me by Mr. Rousselet. The 500 different species of Wheel Animalcules or Rotifera differ from one another in the ex- act shape of the wheel-apparatus, in the jointing of the body and its general shape, and in the develop- ment, in some, of a hard skin or shell like a turtle's or tortoise's shell (Fig. 37) over that broadest region of the body in which in our Fig. 34, A, the stomach marked "St" is placed. They differ also in the shape o...f the gizzard's teeth, in the presence of paddles or legs (in Pedalion alone), and in the presence in some of longer or shorter projecting movable rods or bristles in pairs or in bunches. Many build for themselves tubular habitations of jelly or of hard cemented particles. They are all minute (from the I-I2th to the 1-500 in. in length). They are divided into five principal groups, which are (i) the crawlers, Hke the common Rotifer (Fig. 34), which Fig. 37.— The Rotifer Noteus quadricomis — to show its curious four- horned carapace — from which the wheel apparatus, wa, emerges in front, and the tail, t, behind ; some- what as the head and tail of a tortoise emerge from its protective ' ' box " or carapace.
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