1829.] 
Experiments on Evaporation . 
33& 
The mill works for 60 days, which gives the daily’expense, 
being a portional part of the expense for the season, 
Servant’s wages per diem. 
Total expenditure per diem, 
Quantity of gur made do. do. 
Net produce of the mill, 
Srs» Ck. 
6 
6 
21 
14 
28 
4 
320 
0 
291 
12 
And charge percent, on the manufacture, 8 seers 13 ch. or above 8f per cent. About 
30 pacca tdgaks of cane are generally consumed by one mill during the season : 
this the Zemindars often positively deny, but by cross questioning them, it has ap- 
peared that 30 pacca bigahs is not too high an average to allow to one good mill. 
The Jats have, so far as I have observed, the finer crops, prepare the ground more 
carefully, use the best bullocks, and produce the greatest quantity of gar. The vil- 
lage of Alandelh, near Shamli, has been known to raise canes producing 24 maunds 
of gur on the pacca higah ♦ Shamli is a great mart for g tir, and excellent sugar 
pans are made there, whicli are sent all over the country. 
IX . — Experiments oti Evaporation performed at 1 7 era Cruz , in 1818-20, 
In the preceding number of the Gleanings I gave an account of some experiments 
(conducted on a large scale) to determine the amount of Evaporation in the neigh- 
bourhood of Calcutta, the results of which appear to differ from those hitherto re- 
ceived. I was curious to compare them with some which I had formerly made on 
the opposite side of the globe, and as your readers may also wish to make this com- 
parison, I shall here present them with my conclusions, tabulated for better refer- 
ence. 
Experiments on Evaporation at Vera Cruz, in 1818 — 20. 
Year and month. 
Mean tem- 
perature. 
Monthly evaporation in inches perpendicular. 
Daily 
evapora- 
tion. 
A. D. 
A. S. 
W. D. 
w.s. 
B. S. 1. 
B.S.2 
W. D. 
1818 
September, , . 
80,75 
11,4 
.. 
. . 
2,2 
.. 
October, 
77,57 
16, 
. , 
3,02 
. . 
November, 
73,5 i 
9,2 
8,7 
, . 
2,55 
December, 
70,35 
, , 
. . 
. . 
1,8 
. . 
1819 
1,64 
January, 
72,11 
. . 
.. 
• • 
• • 
February, 
March, 
7-1,93 
76,98 
•• 
... 
2,02 
3,066 
1,435 
April, 
77,08 
13, 
.. 
. . 
2,1 
1,14 
May, 
80,97 
15,85 
13,24 
. . 
2,91 
1,41 
... 
June, 
80,16 
12,03 
10,42 
5,46 
4,56 
1,72 
,182 
July, 
80,97 
11,82 
10,22 
5,86 
4,04 
1,6 
August, 
80,86 
12,02 
10,26 
5,24 
4,56 
1)72 
1,8 
,19 
September, 
79,83 
13,71 
11,87 
6,70 
5,11 
,345 
,17 
October, 
76,35 
20,62 
10,42 
7,09 
22,45 
2,8 
,223 
November, 
75,56’ 
20,52 
6,18 
4,64 
1,91 
2,6 
,34 
December, 
71,77 
15,86 
5, 
4,01 
1,78 
2,76 
,206 
1820 
1,113 
,16 
January, 
70,30 
11,85 
, , 
2,76 
2,45 
1,26 
,09 
February, , . 
74,02 
15,32 
. . 
4,64 
3,76 
1,69 
2,06 
,16 
March, 
72,97 
18,32 
14,31 
7,41 
5,31 
2,27 
4,09 
,24 
Mean an. tem. & to- ) 
♦al evap. for 1 year, J 
76,74 
180,92 
59,67 
in 10 mo. 
50,54 
21,148 
,196 
for 10 mo. 
for 12mo. say 70 in, for 12 mo. say ,191 
