ggG Mr. Cavendish on the Civil Tear 
first of these three columns gives the name of the 27th part 
which the moon quits during the course of the day, and the 
two others the time at which she quits it. I do not know 
what use these columns can be applied to, unless that of as- 
trology. No trace of any thing of the kind has occurred to 
me in any account of the Hindoo astronomy *. 
In these columns the names of the days of the week, and 
nakshatras, are expressed by 'the first syllable of the word. 
The last column is the day of the month used by the Ma- 
hometans. 
As no explanation of these columns is given in the alma- 
nacs, it will be proper to mention my reasons for supposing 
them to be such as I have asserted. 
The numbers in the third and fourth column increase 
while the moon is near her apogee, and diminish during the 
rest of the month, which shews that it must be the time at 
which the moon completes some part of a revolution ; and 
by examining these numbers during twelve revolutions of the 
moon in anomaly, it appears that the moon moves over 33 6 
of these parts in 330 d 4i dan * 43 pa1, which differs very little from 
the time answering to 33 6 teethees, so that there can be no 
doubt but that these columns shew the time at which the tee- 
thee ends. But a further proof of the truth of it is, that the 
time given in these columns for the end of the last teethee 
of each half month, agrees pretty nearly with the time of the 
new and full moon given in the nautical almanac, after al- 
lowing for the difference of longitude between Greenwich and 
* From a circumstance not worth mentioning, I find that the place of the moon 
in this moveable zodiac, is called the Yug. 
