226 



ASTRONOMY 



TABLE K. 



yf results for longitude of astronomical station near mouth of 



3 



/ 



■immSy) and with sidereal chronometer 



No, 2440, (by ParMnson & Frodsham 



0, Gardner and J. H, 



Hon of Major W. H. Emory ^ Chief Astronomer and Surveyor of 

 loundary survey. (C. N. Thom^ computer.) 



I 



t 



Q 



1853. 

 August 13 



17 



S 



ept. 13 

 16 



October 9 



Nov. 



12 



13 



8 



MOON'S FIRST LIMB* 



Longitude west of Greenwich, deduced from 

 corresponding observations made at — 



Greenwich 

 Observatory. 



Radcliffe Oh 

 servatory. 



h, 971. 8* 



6 28 40.00 

 6 28 29.28 

 6 28 30.48 

 6 28 30.72 

 6 28 38.86 



A. 771. 9> 



« 28 00.00 



Philadelphia 



High School Ob 



Bervatory, 



K. m. s. 



6 28 00.00 



6 28 30.60 

 6 28 23.86 



6 28 24.96 

 6 28 28.00 



9 



6 28 32.15 



10 



6 28 26.23 



11 



6 28 23.:^ 



13 



6 28 35.93 



14 



6 28 33.60 



6 28 34.53 

 6 28 30.50 



6 28 31.07 



6 28 30.44 



Number of observations giving to each its value 



m .Q 



1 fc^ 



o 



< 



s •= 



£ &A 



o a 



s. 

 40,00 



29.28 



91.68 



78.44 



38.86 



49.92 



56.00 



34,33 



62.65 



57.30 



23.32 



35.93 



64.04 



Sum of adopted valueVorthe' observations for each night, 661.95 





30.09 



22 



g 



o 

 B 



03 



Q 



moon's SEC^NB Li^B. 



Longitude west of Greenwich, deduced from 

 corresponding observations made at — 



Greenwich 

 Observatory. 



Radcliffe Ob- 

 servatory. 



1853. 

 Aug. 18 



21 

 23 



•24 

 Sept. 17 

 18 

 Oct. 17 

 18 

 19 

 20 



Nov. 14 

 18 

 91 



6 28 20.69 



Philadelphia 

 High School Ob- 

 servatory. 



h. 7n* <> 

 6 28 00.00 



6 28 33.54 

 6 28 32.10 

 6 28 24.60 

 6 28 29.69 



k. 7n. 8, 



6 28 00.00 



6 98 33,62 

 6 28 35.90 



6 28 20.69 



6 28 42.03 

 6 28 33.60 

 6 28 28.67 

 6 28 29.45 



6 28 36.03 

 6 28 34.37 

 6 28 24.09 

 6 28 27.56 



6 28 30.44 





Number of observations giving to each its value* 





Cm 



o 



3 



"3 





i 



^ '3 



II 





20.69 

 67.^4 

 71.80 

 33.54 

 32.10 

 24.60 

 101.75 

 68.74 

 68.87 

 55.19 

 42.03 

 64.04 

 28.67 

 29.45 



Sum of adopted values of the observations for each night, 708.64 



30.81 



23 



Mean longitude from observations on moon's Isl limb 



Po do 2d limb 



6 28 30.09 

 = 6 28 30.81 



Mean longitude from observations on moon 'a 1st and 2d limbs 



h. m. fl. 

 :6 28 30.45 



Longitude of astronomical station near the mouth of the Rio Grande weal of Greenwich Observatory 



h. m. t. 



6 28 30.45 



Note.— Radcliffe Observatory is 5m. 02.605. west of Greenwich, (Radcliffe Observations, vol. XIV, page IX.) High School Observatory, Philadel- 

 phia, is 5h. 00m. 37.56<. west of Greenwich Observatory. In reducing the results from the Radcliffe and High School observations to Greenwich ob- 



, the above differences of longitudes have been applied. 



* In the column " Adopted values of the observations for each night," the results have been obtained by giving double weight to the High School 

 obef^rvntionn on account of its relative di.-<tance from the month of the Rio Grande, and equal weight to the Radcliffe and Greenwich observations. 



