192 AMERICAN JOURNAL 



of sixteen plates, price 20s.), the plates and letter-press being 

 loose in the wrapper for facility of arrangement and reference. 

 Two, sometimes three, genera are taken at a time, for the sake 

 of variety, the publication proceeding with regularity until 

 they are completed. When completed, they are issued sepa- 

 rately as monographs, and when enough monographs have 

 accumulated to form a volume, a title-page is issued for the 

 permanent binding. The publishers undertake the binding of 

 the work, employing a special process, in which sewing is dis- 

 pensed with, to the great advantage and preservation of the 

 plates." 



I do not know whether the deaths of Messrs. Cuming and 

 Reeve will cause the suspension of this gigantic work, but 

 trust that the sale has become sufficiently large to induce its 

 continuance by Mr. Sowerby. 



Mr. Reeve published many papers in the " Proceedings of 

 the Zoological Society of London, and also the following addi- 

 tional separate works: — 



Mollusca of the Voyage of the Samarang. (Adams and 

 Reeve.) 



Elements of Conchology. 2 vols., 8 vo., with 62 colored 

 plates. 



British Land and Fresh Water Mollusks. 12mo. ; cloth, 

 with woodcut illustrations. 



M. VALENCIENNES. 



This gentleman, for many years Professor of Zoology in the 

 Museum of Natural History, Paris, died on April 13th, 1865, 

 aged 71 years. He was well known to naturalists by his 

 numerous published works and papers, many of which treated 

 of Conchological subjects; among others, the Conchological 

 part of the "Voyage of the Venus." He also furnished de- 

 scriptions of some American species for Humboldt and Bon- 

 pland's "Recueil des Observations." etc. 



BOUCHARD-CHANTEREAUX. 



This distinguished naturalist is also dead. He published 

 several local catalogues of the Mollusca of Bologne and Pas- 

 de-Calais, and other papers. At the period of his decease he 

 was Director of the Museum of Natural History of Bologne. 



