File:British reptiles, amphibians, and fresh-water fishes (1920) (14782624005).jpg

Identifier: britishreptilesa00west (find matches)
Title: British reptiles, amphibians, and fresh-water fishes
Year: 1920 (1920s)
Authors: Westell, W. Percival (William Percival), 1874-1937
Subjects: Reptiles Amphibians Freshwater fishes
Publisher: (London) : Chapman & Dodd
Contributing Library: Smithsonian Libraries
Digitizing Sponsor: Smithsonian Libraries

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of the head, as wellas the fat under parts, have given place to the familiarbaby Frog known to all who live in the country (SeeFigs. 9 to 17). Sometimes the little fellows come toland, for the gills have now disappeared and lungs havebeen formed, still bearing a remnant tail behind them,but it soon disappears altogether. A capital account ofthe disappearance of the tail of the Frog is given byP. M. S. in the Glasgozv Citizen as follows :— Everyone is conversant with the outward appearanceof the Frog in its tadpole phase, but the manner of themetamorphosis which takes place within, as it passesfrom the minus-forelegs-plus-tail state to the plus-forelegs-minus-tail one, is not so well known. * The relatively large amount of reserve protoplasmwhich is stored in the caudal part, is gradually transferredto the other structures, and especially to the upbuildingof the anterior appendages. The work is in the hands of a most energetic and capable company of removal contractors in the form30
Text Appearing After Image:
Fig. 9, Eggs. Fig. 10, Egg hatching Fig. 11, Tadpolesjust hatched. Fig. 12, Tadpole without legs. Fig. 13 Tad-pole with hind legs. Fig. 14, Tadpole with front and hindlegs Fig. 15, Tadpole with tail disappearing. J^ig.Perfect Young Frog. Fig. 17, Adult Female Frog. 16, BRITISH AMPHIBIANS of a host of very minute but active amoehocytes—littlecreatures who comprise the very simplest form of life.These set to, and by dint of sheer unremitting toil thelabour is at last accomplished. ** But tragedy crowns the efforts ; the amoehocyteshave so overwrought themselves that they die actually ofoverwork, and with the sudden stoppage of their labourdeath supervenes—no profiteering, no unemploymentbenefit, no old-age pension, no retirement of ease, noteven thanks from the beneficiary, for these hardyworkers. If an army of young Frogs or Toads is encountered at the time they have just vacated their hatching quarters, and they are on the march, a wonderful sight is presented. Many, like their hu

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