88 C. J. MERFIELD. 
uom'®-ur(®-T)2 
n n 
The usual equations have been adopted in finding M’ and M”; the 
ratio n/n’ of the parabolic sectors, also the quantity p have been 
computed with the values of v, r and A, as given in the data. 
All available checks were applied during the calculation, and 
upon the completion of the work, it was found that the adopted 
ratio “J” required so small a correction that a recomputation 
was not necessary. The computer being guided to the following: 
Elements. 
= 1897 Feb. 808155 G.M.T. 
= 172° 17’ 38-75 
= 86° 28’ 31”-40 } Mean equinox 1897 
146° 8 447-28 
Log g 00263356 
Middle Place. 
oe yy 
| 
I 
c- 0 
Coa 8B, AA, = — 8"3.. AB, = + 1°2 
Equations for the Co-ordinates of the Comet. 
= [9°9196857] r sin (176° 32’ 9-16 + 2). 
= [99796499] r sin (278° 38’ 23"-66 + v). 
z = [9°8002836] r sin (211° 16’ 58’-43 + v). 
The comparison of the computed middle place with the observed, 
shews a small difference, which may be accounted for by the 
departure of the true orbit from the pare? form, and the 
uncertainty of the star places. Under tl further 
refinement seemed unnecessary, so that it was not thought advis- 
able to proceed with another approximation; the above elements 
would be very little altered by so doing. 
In conclusion, the author desires to express his thanks to Mr. 
J. Tebbutt, F.R.4.8., of Windsor, for his kindness in communicating 
copies of his observations, and for the courtesy uniformly extended 
to him. 
