Online Encyclopedia

Search over 40,000 articles from the original, classic Encyclopedia Britannica, 11th Edition.

TREE FROG

Online Encyclopedia
Originally appearing in Volume V27, Page 235 of the 1911 Encyclopedia Britannica.
Spread the word: del.icio.us del.icio.us it!

See also:

TREE See also:FROG . Many different See also:groups of tailless Batrachians (see FROG) are adapted to arboreal See also:life, which is indicated by expansions of the tips of the fingers and toes, adhesive disks which assist the See also:animal in climbing on See also:vertical smooth surfaces. These disks do not See also:act as suckers, but adhere by rapid and intense pressure of the distal See also:phalanx and See also:special muscles upon the lowersurface, which is also provided with numerous glands producing a viscous secretion. The best-known tree frog is the little Hyla arborea of See also:continental See also:Europe, rainette of the See also:French, Lauhfrosch of the Germans., often kept in See also:glass cylinders provided with a See also:ladder, which the frog is supposed to ascend or descend in prevision of the See also:weather. But See also:recent experiments conducted on scientific principles show that not much reliance can be placed on its prophecies. This frog is one of the smallest of See also:European Batrachians, rarely reaching 2 in. in length; its upper parts are smooth and shiny, normally of a See also:bright grass-See also:green, which may See also:change rapidly to yellow, See also:brown, See also:olive or See also:black; some specimens, deprived of the yellow pigment which contributes to See also:form the green See also:colour, are See also:sky-See also:blue or See also:turquoise blue; the See also:lower parts are granulate and See also:white. The See also:family Hylidae, of which the European tree frog is the type, is closely related to the Bufonidae or true roads, being distinguished from them by the presence of See also:teeth in the upper See also:jaw and by the claw-like shape of the terminal phalanx of the digits. It is a large family, represented by about three See also:hundred See also:species, two hundred and fifty of which belong to the genus Hyla, distributed over Europe, temperate See also:Asia, See also:North See also:Africa, North and See also:South See also:America, Papua and See also:Australia. See also:Close See also:allies of Hyla are the Nototrema of Central and South America, in which the See also:female develops a dorsal broad pouch in which the See also:young undergo See also:part or the whole of their metamorphoses. The genus Phyllomedusa, also from Central and South America, are quadrumanous; the inner See also:finger and the toe being opposable to the others. and the See also:foot being very similar to the See also:hand. These frogs See also:deposit their spawn between the leaves of branches overhanging See also:water, into which the tadpoles drop and spend their larval life.

End of Article: TREE FROG

Additional information and Comments

There are no comments yet for this article.
» Add information or comments to this article.
Please link directly to this article:
Highlight the code below, right click, and select "copy." Then paste it into your website, email, or other HTML.
Site content, images, and layout Copyright © 2006 - Net Industries, worldwide.
Do not copy, download, transfer, or otherwise replicate the site content in whole or in part.

Links to articles and home page are always encouraged.

[back]
TREE (0. Eng. treo, treow, cf. Dan. tree, Swed. Odd...
[next]
TREE KANGAROO