161 



upon nth January. Prof. Kendall and himself commenced ob- 

 serving it upon the night of 26th January, and continued until 

 the middle of March. They had made about eight hundred 

 micrometrical measurements, and the place of the comet had 

 been compared with about one hundred fixed stars. The ele- 

 ments calculated by Prof. Encke agreed very closely with those 

 Prof K. obtained from these observations. Prof Encke sug- 

 gests that this may be the comet announced to appear in 1848. 

 Messrs. W. and K. had also observed Mauvais' second comet 

 on the 18th of January, and on several subsequent evenings, 

 both with the equatorial and the meridian instruments. 



Stated Meeting, May 16. 



Present, twenty-two members. 



Dr. Franklin Bache, Vice-President, in the Chair. 



Letters were announced and read: — 



From Pierre de Angelis, dated Buenos Ayres, 18th Febru- 

 ary, 1845, relating to an error in the title of a pamphlet by 

 him: and, — 



From Antonio Ladislau Monteiro Baena, announcing a do- 

 nation by him to the Society. 



The following donations were announced: — 



FOR THE LIBRARY. 



Summary of the Transactions of the College of Physicians of Phila- 

 delphia. From November and December, 1844, to March, 1845. 

 Vol. I. No. 9. 8vo. — From the College. 



Biographical Memoirs of John C. Otto, M.D., late Vice-President of 

 the College of Physicians ; read before the College by appoint- 

 ment, March 4, 1845. By Isaac Parrish, M.D. Philadelphia, 

 1845. 8vo. — From the same. 



Fifty-eighth Annual Report of the Regents of the University of the 

 State of New York. Read to the Legislature, March 1, 1845. 

 Albany, 1845. 8vo — From the Regents. 



