35 



the examinations, it was remarked, that in the U. multiplica- 

 tus, Lea, and the U. rubiginosus, Lea, both lobes of the 

 branchiae were occasionally charged with ova on both sides. 



Dr. Bache announced the decease of the Hon. Thomas L. 

 Winthrop, of Mass., a member of the Society, which occurred 

 at Boston on the 21st of February, 1841. 



Dr. Patterson communicated a letter from Mr. Walker, dated 

 20th Feb., 1841, relating to the formulas developed and used 

 by him in his paper, entitled "Researches concerning the Pe- 

 riodical Meteors of August and November;" which was order- 

 ed to be deposited in the archives of the Society, with the pa- 

 per to which it relates. 



Professor Bache stated, that he had received a letter from 

 Dr. Locke, of Cincinnati, relating to the Magnetic Observations 

 made by the author, and published in the Society's Transac- 

 tions and Proceedings; the matter of which he communicated 

 to the Society, in accordance with the supposed wish of Dr. 

 Locke. 



The Secretaries, as a Committee to cause the Records and 

 Documents of the Society to be arranged and bound, presented 

 their Report, accompanied by a letter from J. Francis Fisher, 

 Esq., who had been one of the Secretaries at the time when 

 this duty was assigned to them, and upon whom the perform- 

 ance of it was devolved by them. 



The Records and Documents presented with the report, are com- 

 prised in 19 large quai'to, and 2 folio volumes, and are arranged in 

 order of subjects, as follows : 



I. Nominations of Members. 



II. Letters of Acknowledgment from Members Elect. 



III. Miscellaneous Correspondence. 



IV. V. VI. Letters announcing Donations to the Library ; and 



VII. To the Cabinet. 



VIII. Letters acknowledging Donations. 



IX. Reports of Committees and Board of Officers. 



X. Reports of Committees on Communications. 



XI. MS. Communications on Mathematics and Astronomy. 



XII. MS. Communications on Natural History, Fossil Remains, Mi- 

 neralogy, and Geology. 



