PROCEEDINGS OF SCIENTIFIC SOCIETIES. 



American Academy of Arts and Sciences.— The 11th of 

 December. — The following papers were read : On the temperature of 

 the crust of the earth at great depths. By Messrs. Alexander Agassiz 

 and P. C. F. West. Palestine in the fifteenth century B. C. according 

 to recent discoveries. By Professor Crawford H. Troy. 



Boston Society of Natural History.— December 4th.— The 

 following paper was read : Mr. L. S. Griswold, "The San Francisco 

 Mountains and the Grand Canyon." 



December 18th.— The following paper was read . Prof. G. Frederick 

 Wright, " The present status of glacial man in America." The subject 

 of Professor Wright's paper was discussed by Prof. F. W. Putman, 

 Prof. H. W. Haynes, and others. 



January 1st, 1896.— The following papers were read: Mr. A. W. 

 Grabau, " Lake Bouve, a glacial lake in the Boston Basin ; " Prof. W. 

 O. Crosby, " Glacial lakes in the valleys of the Neponset and Charles 

 Rivers; and the Post-tertiary history of the Nashua Valley. — Samuel 

 Henshaw, Secretary. 



January 15th. — The following paper was read : Mr. William 

 Brewster, Notes on the Natural History of Trinidad. Stereopticon 

 views were shown. — Samuel Henshaw, Secretary. 



New York Academy of Sciences, Section of Biology.— Dec- 

 ember 9, 1895.— The following papers were presented : Prof. C. L. 

 Bristol, " The Classification of Nephelis in the United States." The 

 study of abundant materia], collected from Maine to South Dakota, 

 has shown that the color characters cannot be depended upon for 

 specific determination. An examination of the metameral relations of 

 this leech indicate that not more than a single species occurs in this 

 country. Prof. F. H. Osborn, " Titanotheres of the American Museum 

 of Natural History." The complete skeleton of Titanotherinm robus- 

 tum is remarkable in possessing but twenty dorso-lumbar vertebras, a 

 number identical with that typical of the Artiodactyla, but entirely 

 unique among Perissodactyla. It is now appears probable that the 

 development of horns in the Titanotheres became a purely sexual char- 

 acter, and that the genera Titanops, Marsh and Brontops, Marsh, are 

 founded respectively upon male and female individuals of Titanotherivm 

 robuMum. Dr. J. L. Wortman, " The expedition of 1895 of the Amer- 



