62 Wz. A. Norton on the Dimensions of Donati’s Comet. 
an initial velocity equal to that of the comet in its orbit. The 
values of y and r in those instances in which the right ascension 
and declination are not given, were obtained by reduction from 
the determinations made on the supposition of the particles hav- 
ing at the outset certain lateral velocities imparted by the repul- 
sion of the nucleus. 
Oct. 246043. Sept. 297-7523. 
Force. Inclination. mea wes ag Force. aescsates a| ong goes 
3 M. 
R273. | -10 54-30 | +6,232 | 03 {R, 1-82 | -6°5' 26] 26,500} 1-4 
R,t-213 | -12 27 0 | -8,800 | 0°4 [R, 1-213] -6 9 30) 28,000 Ae] 
R, 0°455} = -24, i 
A, 0°303} -7 1 50} -—46,000 25 
A, 0°455' -7 8 0! -48,300 26 
Sept. 242:360, 
Force. Inclination. Dist. Dist. Force. 
pt. 
Inclination. ist. | Dist. 
; M. ; 
R.182 |46°21 6 | 427,840| £5 | BR, 1-82. | +18 35 10 | +440,800] 24:0 
R yr213 +45 44 ae) —23,000 12 A, 0303 +16 51 40 +121,000 66 
R 0° 455 +6 42 fe) +49,790 27 A, 0455 +17 43 40 +281,300 15:3 
A. 0455 | +5 58 20 | - 4,000} 0 
Sept. 34-834, 
Force. | Inclination. | Dist. | Dist. 
oo “ M. i 
A, 0°303 | +27 44 50 | +900,000} 49° 
+762,000| 41° 
A, 0°455 | +27 25 10 
The following table shows the average inclinations of the lines 
connecting the several particles emitted at each date, with the 
particle for which the repulsion and attraction are each equal to 
zero; also the distances of the individual particles from the aver- 
age lines of direction. When the distance is affected with a 
negative sign, the particle is found on the side of the line toward 
the axis of the orbit. 
