Identifier: sciencerecordcom1874beac (find matches)
Title: The Science record; a compendium of scientific progress and discovery
Year: 1872 (1870s)
Authors: Beach, Alfred Ely, 1826-1896
Subjects: Technology Industrial arts
Publisher: New York, Munn
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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e author determinedthe amount of oxygen consumed by the common mouse,Mus musculus, and found it to be more than 24 times asgreat as that of the frog. (32) TOADS. At the first meeting of the Agassiz Natural HistoryClub organized by the students of the Anderson Schoolat Penekese Island, some interesting statements weremade about toads. It seems that when these animals arekilled by chloroform, the heart continues beating afterdeath, while just the opposite effect occurs in mammals.According to Dr. Wilder, when turtles or toads are killedwith benzine, the hearts will continue to beat for severalhours, although benzine, like chloroform, always stopsthe action of the heart in mammals. In reference to thefact that on Penekese the toads are often found secretedduring the day-time in holes in the turf at depths of fromtwo to five inches, the same speaker suggested that thismight be for the sake of protection from the salt spraywhich must often sweep over an unwooded island. 494 SCIENCE RECORD.
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THE FLYING TOAD. Almost all frogs and toads pass the first stages of theirexistence in water, going through a free, tadpole stage,and all are more or less aquatic when adult. The onlyexceptions are Pipa, Nototrema, Opisthodelphys, and theHylodes. Very many kinds, however, are, when adult,inhabitants of trees. The question may suggest itself tosome, Are there any which can be said in any sense tobe aerial animals ? Birds are almost all capable of trueflight, as also are those aerial existing beasts the bats, andas were those extinct reptiles the pterodactyles. Certainsquirrels and opossums can take flitting jumps by meansof an extension of the skin of the flank, and a similar,though much greater extension, supported by elongatedfreely ending ribs, is found in the little lizards (Draco) call-ed flying dragons. The class of fishes supplies us, also, with an example ofaerial locomotion in the well-known flying-fish. NATURAL HISTORY AND ZOOLOGY. 495 Since, then, every other class of verteb

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