The publications of the Academy are the means by which it 

 holds communication with scientific men throughout the world, and 

 their maintenance is one of the most important functions of the 

 society. 



The first series of the Journal, in octavo, was begun in 1817, 

 five years after the foundation of the Academy, the first number 

 being placed on the table at the meeting of May 20th of that year. 

 The series was continued at irregular intervals for a period of 

 twenty-five years, the eighth and concluding volume being pub- 

 lished in 1842. 



To secure prompter issue of communications made at the weekly 

 meetings the publication of Proceedings was begun in March. 1841. 

 The sixty-second volume, with which this Index terminates, was 

 completed in 1911. 



The second series of the Journal, in quarto, is designed for the 

 publication of papers requiring more elaborate illustration than 

 can be supplied in the octavo form. ' The first volume was issued 

 in December. 1847, and the thirteenth, included in the Index, was 

 distributed in September. 1908. 



It has been considered fitting, as one of the incidents commemor- 

 ative of the centenary of the Academy, that access to the scientific 

 contents of these eighty-three volumes be facilitated by the issue 

 of an Index to the entire series. 



Other serials, published under the auspices of Sections of the 

 Academy, but not indexed, are as follows: 



The American Journal of Conchology, Volumes III-VII, 

 1867-1872. Volumes I and II were published by the editor. George 

 W. Try on. Jr. 



Manual of Conchology. First Series, X, Parts 2, 3 and 4- 

 XVII. Second Series, IV, Parts 2, 3 and 4-XXI. The earlier 

 volumes were published by Mr. Tryon. The work, bequeathed by 

 him to the Conchological Section of the Academy, has since been 

 continued by Henrv A. Pilsbry, Sc. D. 



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