X PREFACE. 



In presenting the first volume of North American Herpetology, I have to 

 return my thanks to those gentlemen who have aided me in the undertaking — 

 and especially to my colleague, Dr. Ogier, of Charleston, who is associated with 

 me in my dissections, the result of which will be given in the Anatomy of the 

 Genera. 



To Dr. WuRDEMAN and Dr. Baron, of Charleston, for many beautiful anato- 

 mical preparations, especially of the Chelonian and Saurian animals. 



To my friend Dr. Geddings, Professor of Surgery in our Medical College, I am 

 greatly obliged for many curious observations on the Reptiles of the low country 

 of Carolina. 



To Dr. Harlan, of Philadelphia, for the use of his library and private notes on 

 Reptiles, and for a fine specimen of Cistuda Carohna. 



To Dr. Binney and Dr. Storer, I owe many thanks for numerous specimens of 

 Reptiles of the northern states, with observations on their habits. 



To Professor Troost, of Nashville, Tennessee, for many of the Reptiles of the 

 west, accompanied with valuable observations, as will appear in the progress of 

 the work. 



Thomas M. Logan, M. D., formerly of Charleston, now residing in New 

 Orleans, I have to thank for a number of beautiful drawings of Serpents, 

 Salamanders, &c., which will appear in the progress of the work. 



