394 



gave tlie specific name of Serpentinus, and described the 

 points in which it dittered from E. platyurus (Cope), a de- 

 scription of which had been given at a meeting of the So- 

 ciety nine 3'ears ago, and was published in its Transactions. 



l*rofessor Cope also communicated evidence of the exist- 

 ence of a new species of Mastodon in the United States, and 

 proposed for it the specific name M. tremoutinns. 



Mr, Chase called attention to some experimental results, 

 illustrating his 6th, 7th and 10th fundamental propositions 

 of central force. 



Professor Biazius read a paper entitled " The progress in 

 Meteorology, and its tendency during the last twenty-five 

 years ; with some supplementary notes to a recent English 

 work bearing that title. 



Pending nominations 830, 831, 832, 833 and 834 were 

 read. 



And the meeting was adjourned. 



Stated Meeting, 3Iarch 16th, 1S77. 



Present, 12 members. 



Vice-President, Mr. Price, in the Chair. 



Mr. McKean a newly elected member was introduced to 

 the presiding officer and took his seat. 



Letters accepting membership were received from Prof. 

 J. M. Hart, dated 228 S. Broad Street, Philadelphia, March 

 2d, 1877 ; and from Prof. F. Reuleaux, dated Berlin, Feb. 

 20, 1877. 



Letters of acknowledgment were received from E. A. 

 Barber, dated West Chester, Pa., March 12, 1877, (73, 75, 

 80); the Lenox Library, dated New York, March 14, 1877, 

 (96, 98); and Prof. J. J. Stevenson, dated 314 W. Thirtieth 

 Street, New York, March 7, 1877 (65 to 98). 



A letter of envoy was received from Prof. Daniel Kirk- 



