172 
We will now consider the values of y, which are obtained from 
different nights for the same observer. 
Observer H. 
The table below gives the results for y from 39 nights during 
the years 1920 and 1921. The list is arranged according to increasing 
mean declination of the fund. stars used. 
Ist column date of observation. 
2nd 5, mean declination of fund. stars used. 
3rd result for y. 
1920 March21 3°.9 | +0°.00147 1920 Febr. 8 | 21°.8 | +-0°.00065 
: „29 30.9 +0.00123 : „15e | 290,9 +0.00274 
„ May 23 10°.0 +0.00263 » March21 21956 +0.00151 
$ mah edoan Rode) —0.00160 » Febr. 21 29°.3 +0.00304 
1921 Febr. 23 (3e +0. 00235 1921 March 3 | 29°.4 —+0.00319 
1920 , 14 14°.4 —0.00163 1920 Febr. 11 29°.9 +0 .00268 
„ July 14 | 16°.3 | +0.00250 | 
6 fes 115) 16°.3 -+0.00307 
» May 18 18°.8 —0.00030 
1920 Jan. 21 30°.6 | +0 .0018! 1920 May 16 | 40°.4 +0 .00312 
1921 Febr. 20 | 30°.7 +0.00283 ij gt bE ATE GO +0 .00387 
920 Pe ede? cS +0.00544 1919 Dec. 15 | 41°.6 -+0.00863 
1921 March10 | 32°.8 +0.00169 1920 Jan. 25 | 41°.8/ -+0.00597 
1920 Aug. 14 | 34°.4 —J-0. 00162 „ March21 430,0 +0.00519 
1921 Febr. 14 | 34°.8 +0.00317 „Febr, 23 | 43°:2 +0.00620 
1920 April 23 | 35°.9 +0.00430 „ Jan. 14 | 43°.5 +0.00642 
„ sEebr. 673599 +0. 00343 ny peor 2043256 —+0. 00638 
„ May 3 | 35°.9 +0.00145 
i ieee 36°.5 +0.00149 
April tb. 30 +0 .00247 
, March29 | 38°.4 | +0.00356 
A Sate 1) 389 +0.00203 
» April 10 | 39°.2 +0.00322 
) Rebree26.. 1 3997 -+0.00465 
NS oe WD 399,9 +0. 00504 
