PREFACE 



Linnaeus had but a poor opiniou of the Ampliibia and their 

 ■describers, or he would not hav^e called the former " pessima 

 tetraque animalia," nor would he liaAe dismissed the latter with 

 the terse remark : " Aniphibiologi omnium paucissimi sunt 

 nulli(jue veri." That was, however, nearly 150 years ago; and 

 at the present time there are fewer difficulties in writing a book 

 on Amphiljia and Eeptiles. Those who care for the study of 

 Amphibia and Reptiles — the Herpetologists, to give them their 

 scientific title — have never been numerous ; but most of them 

 have been serious students. One reason for the fact that this 

 branch of Natural History is not very popular, is a })rejudice 

 against creatures some of which are clammy and cold to the 

 touch, and some of which may l)e poisonous. People who 

 delight in keeping Xewts or Frogs, Tortoises or Snakes, are, as 

 a rule, considered eccentric. lUit in reality these cold-l)looded 

 creatures are of fascinating interest provided they are studied 

 properly. The structure of animals is intimately connected with 

 their life-haljits ; and this correlation is perhaps more apparent in 

 Amphibia and Reptiles than in any otlier class. The anatomist 

 who studies internal and external structure is as much struck 

 with the almost endless variety in details as he who takes the 

 trouble to oliserve the living animal in its native haunts, or at 

 least under conditions not too unnatural. He will agree with 

 V. von Scheliers Toad " tliat those above seem to liave no 



