INTRODUCTION. 



In offering to the public the second volume of the North American Herpetology, 

 I would return my thanks to those Naturalists who have materially assisted in the 

 progress of the work. 



To my friend Dr. Geddings, late of Baltimore, now Professor of Pathological 

 Anatomy, &c. in the Medical College of the State of South Carolina, I am indebted 

 for many valuable observations on the habits of the reptiles of the low country of 

 our state. 



I have to thank Dr. Harden, of Riceborough, Georgia, for several living speci- 

 mens of Batrachian animals, as the Siren striata, &c; also for several Salamanders, 

 some of which are new to me. 



To the Academy of Natural Sciences of Philadelphia, I am indebted for living 



