26 The Period from 1871 to 1880 



The Portland, Maine, Meeting, August, 1873. ( / 'ol. 22) 



1. The Relation of the Dissipation of Energy to Cosmical Evolution. 

 H. F. Walling. 



2. Artificial Shell-Heaps of Fresh-Water Mollusks. C. A. White. 



3. On the duty of Governments in the Preservation of Forests. Franklin 

 B. Hough. 



The Hartford, Conn., Meeting, August, 1874. ( Vol. 23) 



1. On the Inner Satellites of Uranus. Edward S. Hoklen. 



2. The Recency of Certain Volcanoes of the Western United States. 

 G. K. Gilbert. 



3. Studies in the Formation of Mountains in the Sierra Nevada. John 

 Muir. 



4. Cremation among North American Indians. John L. LeConte. 



The Detroit, Mich., Meeting, August, 1875. ( Vol. 24 ) 



For some years before the meeting in Detroit, the programs of the Asso- 

 ciation had been organized under two sections: Section A. Mathematics, 

 Physics, and Chemistry; Section 15, Natural History; and there was a vice- 

 president of the Association for each of these sections. At the meeting in 

 1874, at the time of the adoption of a new constitution and the incorpora- 

 tion of the Association under the laws of the Commonwealth of Massa- 

 chusetts, the policy was inaugurated of having a formal general address by 

 each of the vice presidents. As a rule, the reports herein on later meetings 

 of the Association will contain references only to the addresses of vice 

 presidents. When the addresses were without formal titles the subjects are 

 indicated in parentheses. 



1. Vice presidential address, Section A. H. A. Newton (mathematics). 



2. Vice presidential address. Section II. J. W. Dawson (paleontology). 



The Buffalo, A'. )'., Meeting, . hu/itst, 1876. ( / 'ol. 25 ) 



1. Vice presidential address. Section on Mathematics, Physics and Chem- 

 istry. C. A. Young (astronomy ). 



2. Vice presidential address, Section on Natural History. Edward S. 

 Morse: "What American Scientists have done for Evolution." 



3. Address of chairman of Subsection on Chemistry. ( \. F. Parker 

 ( molecules). 



4. "On the Post-Glacial History of Sequoia Gigantea." John Muir. 



The Nashville, Term., Meeting, August, 1877. ( Vol. 26) 

 1. Vice presidential address. Section on Mathematics. Physics and Chem- 

 istry. E. C. Pickering (research). 



