76 
(See plate October ist, 11 hours, 00 minutes) was at a considerable distance 
from the head, and connected with it by very faint and straight streamers. 
On plate October 2d, 10 hours, 30 minutes, it is visible still farther 
away, and much fainter, and the new tail near the head of the comet, is 
beginning to assume its usual form. 
The next great disturbance took place on October 15th. The night be- 
fore, the comet was quite normal in appearance, as shown in plate October 
14th, 10 hours, but on October 15th, 8 hours, a great puff or explosive action 
is shown. 
On the next plate of the same night this is shown at a greater dis- 
tance from the head, and of a little different form, measurement of the 
plates giving velocities as high as 70 miles per second. 
The plate of November 15th, 6 hours, 15 minutes, shows the comet dur- 
ing the latter part of its time of visibility, and when it could be seen for 
only an hour or two before setting, and shows a great variety of detail in. 
the streamers and cordensation in the tail, all of which were invisible in 
any telescope, and were known only through photography. 
About seventy-five plates of the comet were secured in all, and gave 
a fairly complete history of it from September 21st to December 1st. 
