On the Temperature of Welle* 
131 
1830 .) 
the manufacturer. The sugar mills and boilers should be so constructed as to 
be easily removed from one place to another. The season for manufacturing in 
this country ^ continues for five months, viz. November, December, January, Fe- 
bruary, and March. \ moveable mill could take up the cane of many villages : 
it is purchasable at about 5 rupees per small cachu big a of good cane, or 30 
rupees per acre, producing 2037 lbs. of gur by the native process, or little more 
than a farthing per II). taking the rupee at the value of two shillings ; the difficul- 
ty will be to gel the people to grow the sugar cane, as this would bring the tahsil- 
dar about their ears, at the next Jama-band'i ; for although the Government, at pre- 
sent, gets only a small portion of the profits of the soil, yet, keeping to the old 
system, they take as much is they c m get, and any thing like improvement this 
way, or in digging wells, immediately leads to a new pretext for an increase of the 
demand ; and the manner of levying the revenue, and not the actual amount, is the 
most objectionable part of the Kevenue System ; but as following the subject 
further may lead to forbidden ground, I shali here close this communication, and 
remain your obedient servant, 
Upper Dooab, March , 1830, Z. 
VII . — On the Temperature of Wells. 
To the Editor of Gleanings in Science. 
Sir, 
Having often heard it asserted by natives, in different parts of the country, 
that the water of deep wells is warm during the cold, and cool during the hot 
months of the year ; and having often remarked myself, while bathing, the high 
temperature of water, during the cold season, fresh drawn from the well, I was 
induced, last year, to bring the matter to the test of experiment, the result of which, 
as exhibited in the following table, is at your service, should you think it worthy 
of a place in your excellent periodical. f 
The well is ( J0 yards from the edge of the river Ganges, in lat. 25o 11 North. 
The level of the water of the river, on the 23d January, 1829, when the experiments 
commenced, was sixty one feet below the top of the bank, or general level of the 
surrounding country. The surface of the water in the well was the same. On 
the 5th of September the water of the well was 43, and that of the river 37 feet 
below the same level. . 
The temperature of the water at the bottom of the well, was ascertained as fol- 
lows. A thermometer was placed in a bucket and let down into the well, so as 
nearly to reach the ground at the bottom. After remaining there for about 15 
minutes, the bucket was quickly hauled up over a pulley, and the thermometer read 
off, in the water, before the latter had time to alter its temperature. A second 
thermometer was placed in a shady spot, close to the well, under some plantain tiees. 
I am, Sir, your sincere well-wisher, 
1st May, 1830. D - G ' J * 
Date. 
Thermometer at the 
bottom of the well- 
1829. 
January 23 
21 
25 
27 
28 
30 
31 
February 1 
7 
8 
May 2 7 
At sunrise, 
10“». after sunrise, 
At sunrise, 
At sunrise, 
At sunrise, 
15 ms. after sunrise, 
10 ms. after sunrise. 
At sunrise, 
At 3 p. M. 
At sunrise. 
At sunrise, 
£ hour after sunrise, 
At 3 p. M. 
82 
82 
82 
82 
82 
82 
82 
f 82 
\ 82 
82 
82 
{3l 
Ther. in the 
open air in 
the shade. 
o’ 
49 
50 
44 
46 
54 
54 
52 
52 
77 
47 
45 
84 
102 , 
Remarks. 
Wind W. 
„ w. 
99 
99 
99 
99 
99 
99 
99 
99 
99 
99 
» 
W. 
w. 
E. 
S. W. 
w. 
s. w. 
w. 
w. 
Calm. 
E. 
N.E, 
I 
