XV1 PREFACE. 
which seem to injure the sense, have been taken no- 
tice of in the list of corrigenda. 
Before concluding, the author embraces this op- 
portunity of expressing his gratitude for the kind as- 
sistance he has experienced in prosecuting the work. 
He must particularly mention the name of Professor 
JAMESON, who has added so much to the reputa- 
tion of the University of Edinburgh, as an eminent 
teacher of Natural History, and to whose exertions 
the public is indebted for that splendid collection 
of ANIMALS which adorns the Edinburgh Museum. 
The work, indeed, was begun in consequence of his 
recommendation, and he has contributed to its pro- 
gress by many kind offices. 
To Parrick Neri, Esq. the author has been 
under particular obligations, for many valuable hints 
and sound criticisms, dictated equally by the ties of 
friendship and attachment to the science. 
After all his exertions, the writer is aware that 
much more might be done, to give this treatise 
stronger claims to public favour, and to render it 
better deserving of the title which, for the sake 
of discrimination, he has, perhaps presumptuously, 
