xxiv INTRODUCTION. 



rather voluminous Appendix contains corrections and addi- 

 tional facts, together with an account of the digestive and re- 

 spiratory organs. At the end of the volume you will find the 

 names of all my subscribers who have continued to receive the 

 fasciculi of my plates until the work has been completed. Those 

 who have stopped short, and discontinued their subscriptions, 

 it is unnecessary to mention ; but of them there are now up- 

 wards of one hundred and twenty. 



To Professor Traill and the Curators of the Library of 

 the University of Edinburgh, for the liberality of which they 

 have allowed me the use of many valuable works not other- 

 wise to be procm-ed, I offer my sincere thanks ; as well as to 

 Professor Jameson for the specimens sent to him by the late 

 Dr Meredith Gairdner, which he has had the kindness to 

 lend me from the rich Museum under his charge. Allow me 

 also to mention the names of a few friends to whom 1 shall 

 ever feel most deeply indebted. The fii'st on the list is Wil- 

 liam Macgillivray, and I wish that you. Reader, and all the 

 world besides, knfew hun as well as I do. The next is William 

 CUTHBERTSON, Esq., originally of London, but now a citizen of 

 New York. I have to offer my most sincere thanks also to B, F. 

 Duncan, Esq. of Charleston in South Carolina, for his valuable 

 and friendly assistance ; and to Charles Edmondston, Esq. of 

 the same city, for his exertions in procuring specimens in 

 spirits. 



I have pleasure in saying that my enemies have been few, 

 and my friends numerous. May the God who granted me 

 life, industry, and perseverance to accomplish my task, forgive 

 the former, and for ever bless the latter ! 



Should you feel inclined to read the little book, which will 



