———$———- - — 
1V 
Mr. Du Bois here begs to acknowledge the very kind 
and effective assistance which he has received from W. 
Swainson, Esq. who has, also, liberally presented him 
with the use of his pencil, in preparing the two elegant 
and accurate plates which accompany this Catalogue, 
and of his pen, in drawing up the Appendix. Thus it is 
trusted, that this little volume, which would otherwise 
_ have ended its functions with the conclusion of the Sale, 
_ willnow become of some permanent usc. 
