* 3 ° 
Mr. herschel’s Aftronomlcal Objirvatlons 
D. H. M. S. 
From May 9 n o 45 
to May 11 12 16 48 
Divided by 2 revol. 2 1 1 6 3 
Gives 1 revolution = 24 b. 38' i",5v 
A fecond final 1 interval. 
May 11 101748 
i 3 11 25 5 i 
2 revol. 2183 
1 revolution — 24 h. 34' 
Here we have two very fhort intervals that agree to 4', which 
is more than we could have expedted in luch fhort periods of 
time. 
Comparing together obfervations that were made at a greater 
diftance, we find, 
Firfl: monthly period. 
May ii 10 17 48 
June I 799 20 UlIcAving 3 ' becaufe the ohf. %sthe 
fpot was rather more advanced*. 
36 revol. 36 22 51 32 
1 revolution =■ 24b. 38' 5", 9, 
Second monthly period. 
May 11 11 42 48 
J nnp t tt rn n o $ all0w5n g 3L for the. time the fpot would Rave: 
A y 1 taken to come to the place mentioned- 
38 revol. 39 o 7 34 
1 revolution = 24 h. 38' 5", 4- 
