The Rutherfurd Photographic Measures. 



151 



Table XXI. — Wilsing's Measures, {Concluded). 



No. 



83 

 84 

 85 

 86 



90 

 9i 



92 



93 

 94 



95 

 96 



97 

 98 



99 

 100 

 101 

 102 



103 

 104 

 105 



106 

 107 

 108 



109 

 no 



Date. 



1892 Dee. 



1893 Jan. 



Feb. 



Mar. 



Apr. 



22.36 



7.24 



7.28 



11.25 



28.26 



4.26 



23.61 

 23.64 

 27.62 



6-57 

 18.59 

 21.50 



May 9.55 

 10.51 

 I5-56 

 23-57 



June 1.50 



7-49 

 14-49 

 24.44 



July 4.44 



I5-4I 

 Aug. 3.41 



Aug. 



Sept. 



4.41 

 10.39 



31-45 



1.49 



15.48 



Meas. 

 Dist. 



21.12 

 21.16 

 21.12 



21.15 

 2I.IO 

 21.19 



20.98 

 21.00 

 21.06 



20.95 

 21.02 

 21.05 



21. II 

 21. II 

 2I.IO 

 2I.O9 



21.12 



21.15 

 2I.l6 

 21.13 



21.22 

 21.21 

 21.24 



21.23 

 21.17 

 21.26 



21.27 

 21.22 



Equations of Condition. 



i.x-\-i.g7y — .i3lT4-.i2=o 



I 4-2. 02 -)-- 10 — |—- 16 



1 -j-2.02 -j-.io -j - - 12 



I +2.03 +.16 +.15 



1 +2.08 +.40 +.10 



1 +2-IO +.49 +-I9 



I -(-2.23 +-83 — .02=0 



I -j-2.23 +• 83 .00 



1 +2.24 +.84 +-o6 



1 +2.27 +.84 — .05=0 



1 +2.30 4-. 80 +.02 



1 +2.31 +.79 -f.05 



1 +2.36 -{-.66 +.11=0 



1 +2.36 +.65 +.11 



1 +2-37 +.60 +.10 



1 +2.39 +.52 +.09 



1 +2.41 +.41 +.12=0 



1 +2.43 +.34 +.15 



1 +2.45 +.24 +.16 



1 +2.48 +.10 +.13 



1 +2.51 —.04 

 1 +2.54 —.19 

 1 +2-59 —-44 



+.22=0 



+.21 



+.24 



1 +2.59 —-46 +-23=0 



1 +2.61 —.52 +.17 



1 +2.67 — .72 +- 2 6 



1 +2.67 —.73 +.27=0 



1 +2.71 — .81 4-. 22 



Cor- 

 rected 

 Distance. 



20.947 

 21.003 

 20.963 

 20.997 

 20.964 

 21.060 



20.869 

 20.889 

 20.949 



20.837 

 20.900 

 20.929 



20.974 

 20.973 

 20.958 

 20.939 



20.957 

 20.980 

 20.979 

 20.935 



21.009 

 20.984 

 20.9S8 



20.977 

 20.909 

 20.977 



20.9S6 

 20.926 



Distance 

 minus 

 Mean. 



—-035 

 +.021 

 — .019 



+ •015 

 —.018 

 4-.078 



—-II3 

 —-093 

 —-033 



—-I45 

 —.082 



—-053 



—.008 

 — .009 

 — .024 



—•043 



—.025 

 — .002 

 — .003 



—.047 



4-. 027 

 4-. 002 

 4-. 006 



—.005 



—•073 

 —.005 



+.004 

 —.056 



21.00 = Assumed Mean. 



Mean 



2vv 

 20.982 



= 1. 1032 



