150 
ANNUAL, REPORT SMITHSONIAN INSTITUTION, 1919. 
Table VI. — Comparison plates, declination. 
142a. 
14,6. 
15,. 
15j. 
17i. 
172. 
I82. 
+7.000/ +l.7S7d +1.657€ +3. 316a = 
+0.446 
+0.661 
+0.964 
+0.343 
+1.861 
+0.752 
+0. 868 
+4.094 +2.089 +1.840 = 
+0.060 
+0. 420 
-0. 156 
+0. 140 
+ 1.038 
+0. 041 
+0. 476 
+4.664 +3.694 = 
+0.202 
+0. 394 
-0. 203 
-0.117 
+0. 526 
-0. 110 
+0. 122 
+5.784 = 
+0. 380 
+0. 482 
+0.220 
+0.044 
+ 1.004 
+0.296 
+0. 419 
+3.638d +1.666e +0.994a = 
-0. 054 
+0. 251 
-0.402 
+0.053 
+0.563 
+0. 151 
+0.255 
+4.271 +2.908 = 
+0.096 
+0. 237 
-0.431 
-0. 198 
+0.085 
-0. 288 
-0. 0S4 
+4.212 = 
+0. 168 
+0. 169 
-0. 237 
-0. 119 
+0. 122 
-0.060 
+0.008 
+3.508e +2. 453a = 
+0. 121 
+0. 122 
-0.247 
-0. 222 
-0. 173 
-0.219 
-0. 201 
+3.941 = 
+0.183 
+0. 100 
-0. 127 
-0. 133 
-0.032 
-0.019 
-0. 062 
+2. 224a = 
+0.098 
+0. 015 
+0.046 
+0. 022 
+0. 089 
+0. 134 
+ 0.079 
a = 
+0. 044 
+0.007 
+0. 021 
+0.010 
+0.040 
+0.060 
+0. 036 
C = 
+0. 004 
+0. 030 
-0. 085 
-0.070 
-0.077 
-0. 104 
-0. 082 
(J = 
-0. 028 
+0.054 
-0. 077 
+0.044 
+0. 179 
-0.010 
+0.098 
21. The values of a are collected in Table VII 
Table VII. 
Right ascension. 
Declination. 
Eclipse— scale. 
Compari- 
son—scale. 
Eclipse- 
scale. 
Compari- 
son—scale. 
r 
T 
r 
r 
+0.098 
+0.042 
+0. 126 
+ 0.044 
+0. 126 
+0.024 
+0. 139 
+0. 007 
+0. 107 
-0.015 
+0. 114 
+0. 021 
+0.148 
+0.018 
+0.111 
+0.010 
+0. 140 
+0.020 
+0. 137 
+0. 040 
+0. 073 
+0.005 
+0. 139 
+0. 060 
+0. 145 
+0. 008 
+ 0. 136 
+0. 036 
Mean +0. 120 
+0.015 
+0. 129 
+0. 031 
By substraction the a of the comparison plates the scale plate is 
eliminated, and we derive from right ascensions ar=:-(-0.105'" and from 
declinations (x=z-{-0.098'' . 
Reference to the normal equations shows that the declination re- 
sult is of double the weight of that from the right ascensions. 
Thus 
a= +0.100»-=r +0.625". 
This is at a distance 50' from the sun's center. At the time of the 
eclipse the sun's radius was 15.8' ; thus the deflection at the limb 
is 1.98''. 
The range in the values of a is attributable to the errors inherent 
to the star images of the different plates, and can not be reduced by 
