File:Hardwicke's science-gossip - an illustrated medium of interchange and gossip for students and lovers of nature (1886) (14766230091).jpg

Identifier: hardwickesscienc22cook (find matches)
Title: Hardwicke's science-gossip : an illustrated medium of interchange and gossip for students and lovers of nature
Year: 1886 (1880s)
Authors: Cooke, M. C. (Mordecai Cubitt), b. 1825 Taylor, J. E. (John Ellor), 1837-1895
Subjects: Science Natural history
Publisher: London : Robert Hardwicke
Contributing Library: MBLWHOI Library
Digitizing Sponsor: MBLWHOI Library

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ths would work up and downwith rapidity. Taking into consideration that when tadpoles werein a pond in a natural condition they must necessarilyhave a variety of food—whatever a sudden gust ofwind or chance might place in their way, such asdead mice, birds, etc.—I procured as much varietyfor them as I could, and I found them very quick they eagerly seized on it. I used to take a piece ofraw beef, mutton, or lamb, about the size of a largemarble, and tie it on to the end of a piece of thread,so that I could easily draw it out of the water, for ifleft in too long the meat will foul it. I then loweredthe meat into the water ; soon the tadpoles would allget together, but quite in the opposite direction towhere it was. They would seem very fussy anduncertain what to do, until one would come forwardand attack the meat; the rest would immediatelyfollow, and during the rest of the day the meat wouldbe covered with them ; and when in the evening I Fig. 79.—Third Frog Stage(natural size).
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Fig- 77-—First Frog Stage (enlarged). Fig. 78.—Second Frog Stage (enlarged). Fig. 80.—Fourth Frog Stage(natural size). to discover anything different in the shape of alimentto what they were used to having. A little finelychopped hay, sprinkled on the top of the water, theywould discover immediately, and it would busy themfor the rest of the day. Dead caddis-worms and deadwater-snails they greedily devoured ; in fact nothingcame amiss to them in the form of decaying animal orvegetable matter, for they are thorough scavengers,and follow out this law of their nature, even to eating their dead relations. I used to give them meat nearly every day, and found, quite contrary to what M. H. Robson says, that went to take out what was left they would notrelinquish their hold of it until they found themselvesin the air, and then they would drop back into theirnative element. The meat used to be considerablytorn about and much diminished. M. H. Robsonevidently had not the time to devote to

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