108 
On the Physical Geography of, and the Distribution of Terrestrial 
Mollusca in, the Bahama Islands. By Thomas Bland. 
Spectroscopic Examination of Silicates. By Prof. Albert R. Leeds. 
The committee have to acknowledge the obligation of the 
Society to Prof. Stevenson, for the cost of Plate XII, and 
to Mr. W. G. Binney for that of drawing on stone, plates 
XI, XII, and XIV, and also plates XV and XVI. 
An additional number of the Annals, making up the usual 
amount of matter for the year 1873, and Bonehadine Vol. X, 
is now in press, and will speedily be issued. 
It will contain the following papers :— 
On the Lingual Dentition and Anatomy of Achatinella and other 
Pulmonata. By Thomas Bland and W. G. Binney, (with plates XV 
and XVI). 
Outlines of a Bibliography of the History of Chemistry. By Dr. H. 
Carrington Bolton. 
Description of a new Species of Heliz, and note on H. Mobiliana, 
Lea. By Thomas Bland. 
Catalogue of the Birds ascertained to occur in Illinois. By Robert 
Ridgway. 
Description of six supposed New Species of American Birds. By 
George N. Lawrence. 
(The remainder of the report was occupied wholly with 
matters of detail regarding the issue of the New Series of 
Proceedings, and certain delays in the appearance of the 
second number.) . 
THOMAS BLAND, Chairman. 
Abstract of the Report of the Librarian. 
The Librarian respectfully reports that during the year 
ending February 16th, 1874, there have been received the 
following books and periodicals :— 
From societies, 8 folio volumes, 14 quartos, and 54 
octavos; 25 parts of quarto volumes, 265 parts of octavos, 
and 6 pamphlets. 
From the State of California, 5 imperial octavo volumes. 
From the Department of the Interior, 5 octavo volumes. 
From resident member, 2 octayo volumes. 
