8 LIST OF CONTRIBUTORS. 



Berthoud, E. L. Description of the Hot Springs of Soda Creek, 

 their location, number, temperature and altitude and the geologi- 

 cal features of the surrounding locality ; together with the re- 

 markable discovery of a human skeleton and a fossil pine tree in 

 the boulder and gravel formation of Soda Bar, Oct. 13, 1860. 

 P '66, 342 



On prehistoric human art from Wyoming and Colorado. 



P '72, 46 



On the occurrence of uranium, silver, iron, etc.. in the 



Tertiary formation of Colorado Territory. P '75, 363 

 Bicknell, Ernest P. and Fletcher B. Dresslar. A review of 



the species of the genus Semotilus. P '85, 14 

 Biddle, John. On the crania of thugs. P '57, 151 

 Bigsby. J. J. Description of a new species of trilobite. j iv, 365 

 Bilgram, Hugo. Inclusions in quartz. P '03, 700 



Diachaea cylindrica, a new species of Mycetozoa. P '05, 524 



Unusual forms of Myxomycetes. P '10, 271 



Binney, William G. Descriptions of American land shells. P '57, 18 



Notes on American land shells No. 2, P '57, 183 ; No. 3, P '58, 



114 ; No. 4, 197 ; No. 5, P '59, 189 ; No. 6, P '60, 150 



On a species of Leda common to Japan and Massachusetts. 



P '60, 49 



— On geographical distribution of gasteropods. P '60, 49 



— Descriptions of new species of Pulmonata in the collection of 

 the Smithsonian Institution. P '60, 154 



— Catalogue of land and fresh-water univalve Mollusca col- 



lected in British America by Messrs. Ross, Kennicott and 

 Drexler, and deposited in the Smithsonian Institution. P '61, 330 



— Notes on the terrestrial mollusks of the peninsula of Cali- 

 fornia. P '61, 331 



— On the anatomy and lingual dentition of Ariolimax and other 



Pulmonata, P '74, 33 



— On the jaw and lingual membrane of North American ter- 

 restrial Pulmonata. P '75, 140 



— On the lingual dentition and genitalia of Partula and other 



Pulmonata. P '75 ,244 



— On the lingual dentition, jaw and genitalia of Carelia, On- 

 chidella, and other Pulmonata. P '76, 183 



— On the land shells of the Mexican Island of Guadeloupe, col- 



lected by Dr. E. Palmer. P '79, 16 

 — See ttliinel, Thomas, and W. G. Binney 



