266 Dr. Herschei/s Observations , &c. 
weather I never had an opportunity of seeing the comet 
afterwards. 
When I compare these observations with my former ones 
of 15 other telescopic comets, I find that out of the 16 which 
I have examined, 14 have been without any visible solid body 
in their centre, and that the other two had a very ill defined 
small central light, which might perhaps be called a nucleus, 
but did not deserve the name of a disk. 
