107 



Dunglison, M. D. Vol. III. Nos. 2 to 8. Philadelphia, 1839. 



From the Editor. 

 The American Journal of Science and Arts. Conducted by Benjamin 



Silliman, M.D. LL. D., aided by Benjamin Silliman, Jr., A. B. 



January to July, 1839. Vol. XXVI. New Haven, 1839.— 



From the Conductors. 

 The Transylvania Journal of Medicine and the Associate Sciences. 



Vol. XII. No. 1. Lexington, 1839. — From the Conductors. 



The Committee on the observations of the Solar Eclipse of 

 May 14-15, 1S36, reported, and their report was ordered for 

 publication. 



The American observations, 28 in number, were given at length. 

 At the invitation of Mr. C. Rumker, Director of the Hamburg Obser- 

 vatory, conveyed through Prof. A. D. Bache, 21 of these observa- 

 tions had been forwarded by Mr. John Vaughan to that distinguished 

 Astronomer, for comparison with those which had been made in 

 Europe. The report contained a letter from Mr. Rumker, in which 

 the time of ecliptic conjunction, with its variations for the small errors 

 of the tables, was deduced from each of the European and American 

 observations. Mr. Rumker remarks, that the corrections of this 

 time for the corrections of the moon's declination and parallax, ap- 

 pearing with opposite signs in the observations on the two continents, 

 afford unusual facilities for determining these corrections, particularly 

 the latter. Mr. Rumker's letter not having given the final results 

 deducible from his equations of condition, the committee appended a 

 letter from Mr. Sears C. Walker, in which he deduces from Mr. 

 Rumker's equations, the following corrections of the solar and lunar 

 elements, as given in the N. Almanac. 



d (Q -f- (§) = — 2" .279 = correction of sum of semidiameters. 

 d(Q — (|>) = — 1".750 = ,, difference of semidiameters. 



d fi = — 6" .736 = „ moon's latitude. 



dw = -f- l".516 = „ moon's parallax. 



d x = — 2" .276 = ,, moon's longitude. 



These corrections being referred to the moon's orbit and its 

 secondaries, give, after Bessel's notation (Astr. Nachr. 320.) 

 i = — 2".934 =±= cor. moon's place in true orbit. 

 £ = — 7"198 = „ on secondary to do. 



Mr. Peters, (Astr. Nachr. 326) without the American observations, 



had obtained. 



< = — 3" .650. 

 £= — 5" .472. 



