284 



8. HIKAYAMA. 



180' 190° 200° 210° 220° 230° 240* 250° 200° 270° 



Differences 



Weight. . 



- 1.2- 0.3- 1.0 

 256 27»; 2H0 



- 1.1 

 294 



0.2 

 308 



- 1.4- 2.5 

 316 318 



- 3.2 



804 



270° 280° 290° 300° 310° 320° 330° 340° 350° 360° 



Differences. 

 Weight. .. 



6.2 



305 



4.8 

 291 



3.0 _ 2.1 - 0.9— 1.6 - 1.2 + 1.3,+ 2.0 



■2\)-2, 286 281 282 278 281 281 



From the-se we get the following 36 equations of condition, 



(-015 X-174 F+ 14=0) x 2.72 



(_04.5 X — 168 F + 24 = 0) x 2.61 



(-074 X-15S F + 37 = 0)x2.4o 



(-100 X-143 F + 40 -<<; x2.38 



(_123 X-123 F + 45 =0)x2.30 



( -1 13 X-100 1*+ 35 =0)x2.23 



+ 015 X + 174 F-12 =0) x2.56 

 + 15 X+168 Y— 3 =0)x2.76 

 r + 074 X+158 F— 10 = 0) x 2.80 

 ;+l(H) X+l 13 F-ll=0)x 2.9-1 

 + 123 X+l 23 F- 2 = 0) x 3.08 

 +_ i |:j .v+ 100 F-1 l-=0) x3.10 



(_158 X — 074 F+ 31=0)x2.08 (+153 X + 074 F — 25 -0) x 3.18 



(_168 X-045 F+ 13 :0)x2.01 ( + 168 X + 015 F-32 = 0) x3. 17 



;_171 X-015 F+ 28=0) x 1.90 (+174 X + 015 F-25=0)x3.04 



(__ i 71. X + 015 F+ 22=0) x 1.82 (+17 I X-015 F-62=0) x 3.05 



(_168 X + 015 F+ 21=0) x 1.80 ( + 138 X + 015 F-48 = 0)x2.91 



( _ 1 58 X + 07 1- F- - - 0) x 1 .7(5 ( + 1 58 X + 07 I F— 32 = - 0) x 2.92 



^ _ i |.:j x + 1 00 F~ 2 = 0) x 1 .87 ( + 1 43 X + 100 F - 2 1 = 0) x 2.80 



(-123 X+123 F+ 31 -0)xl.95 ( + 123 X + 123 F- !» 0. x 2.81 



1 - 1 00 X + 1 13 F+ 37=0) x 1 .07 



( — 07 1 X+158 F+ 5= :0)x2.03 



( — 045 X + 168 F- 1 1 0)x2.23 



(_015 X+l 71 F+ 9 =0)x2.31 



( + 10O X+l 13 F— 10 0) x2.82 

 1 + 071 X+158 F- 12=0) x 2.78 

 ( + o 45 X + 1 68 Y + 1 3 = 0) x 2.8 1 

 ( + 015 X+174 F+20 = 0)x3.81 



The solution of these 36 equations by means of the least squares gives 

 X= +0M8051 F= +o°.038l2 



Hence 



Ô '- ô = + 0°. 185 cos (a + 1 2°.0) 



