PROPOSALS 



FOR PUBLISHING, BY SUBSCRIPTION, 



IN 



About Fifty Quarterly Parts, 

 Price £l lis. 6d. each, 



SPECIES CONCHYLIORUM; 



OR DESCRIPTIONS 



OF 



ALL THE KNOWN SPECIES 



OF 



By G. B. SOWERBY, F. L. S. &c. 



Illustrated by Coloured Plates, 

 By J. D. C. SOWERBY, F. L. S. &c. 



Lv consequence of the great extent of this undertaking', and 

 in order to secure its regular continuation, it is requested that 

 those wl\o desire to patronize the Work will forward their names 

 and addresses to the Author, 156, Regent Street, London ; or 

 to Messrs. Sowerby, 2, Mead Place, Lamheth. The Work 

 will be printed on Royal Quarto, and each Number wUl contain 

 about eighteen highly finished P ates, coloured from Nature, 

 and comj)rise about 100 Species; so that when complete there 

 will be descriptions and figures of about Five Tliousand Species. 

 Those Subsci'ibers who are disposed to favour the undertaking 

 by advancing Twenty Pounds, will have the complete Work 

 delivered to them for Sixty Pounds ; so that for each Part, as 

 it appears, they wiUhave only to pay Sixteen Shillings ; thus 



