1833.] Miscellaneous. 657 
miles will press with a weight of 14.856,884,072 lbs. on every square inch, and then 
to get the height in inches, gained by the barometer, we have 14# lbs. to 30 inches, 
(or general height of the barometer at the level of the sea nearly,) as 14.856,884,072 
Ibs. to 30.217,4 inches nearly, or .217,4 decimal parts, rather more than $th of an 
inch only for the measure of height, gained in the barometer, by the additional 
weight of the 138th part of the total height of the atmosphere, caused by the 
attraction of the sun and moon, ina similar manner, and in the same proportion, 
as the tides are raised above the level of the sea, 
Very nearly the same answer is obtained, by considering the atmosphere so con- 
densed, as to have its specific gravity equal to that of water; for, instead of the 
former height in miles, use 343 feet height of water, which is equal to the pressure 
of the atmosphere, and higher than which a common atmosphere pump will not 
raise that fluid. Then 343 feetdivided by 138 as before is = .25 of a foot, therefore 
34.5 feet height of water : 14.75 lbs, pressure on the square inch }? 34.5-+.25, (or 
height of water plus its 138th part = 34.75 lbs.) : 14,856,876 lbs. pressure on a 
square inch, only exceeding the former 14.856,884,072 by the .000,008,072nd part 
of a Ib. and proving the result of the former calculation to be correct. 
In the above investigation, the specific gravities of air and water are taken as 
equal, but as they differ much*, and as [ have no other data, let the height of the 
atmosphere be considered uniform, for 5% miles only, as before explained; the 
calculations will, on the foregoing principle, make the height, gained by the baro- 
meter, equal to only 25th part of an inch, which is almost an inperceptible quan- 
tity, and shews, that that instrument cannot sensibly indicate the difference of 
altitude of the atmosphere, due to the attraction of the sun and moon, as sup- 
posed by the Burmese Prince ; for 5 +138 miles=.003,804,347,8th part of a mile, 
when the atmosphere is uniform, and 5 miles high, therefore, as 5.25 miles : 
14.75 lbs. 1 2 5.25-+-.003,804,347,8 miles ! } 14.760,688,405,7 lbs; and again, 143lbs. 
:30 inches :: 14.760,688,405,7 Ibs. : 30.021,739,125 inches, or .021,739,125=3,th 
part only of an inch gained in height by the barometer as above stated. 
I subjoin a table of the heights of the barometer, in order that the differences, 
which I have shewn, for every month, may be observed, at the times of spring’ 
and neap tides, in Calcutta, for the satisfaction of the Burmese philosopher, should 
he think it necessary, to prosecute his inquiries any further into this subject. 
Barometer at Sunrise, (reduced to 32° F.), at the Surveyor General’s Office, Cal- 
cutta, taken from the As. Soc. Journal, vol. 1, for the year 1832. 
ES ES A A 
Monthly |Lemperature Monthly 
1832. Means, In. Diff. of Air. Difference. 
J 30.0517) F468 Al ang 
PRCRIERIOALAS 51 sa:eH lln,ole01s: we 0s 05 te 4. x 
Debiaavy, 5 5, peeps | 29.943 fF 108 61.2 ea 3 
MMEAEE ON. das Ueto oo): lavas] 2eenOo 3 | 078 66.3 86 2 
April, «valentine (re 29,260 hubs 9105 74.9 Pepe 
LEU Op SE a a ae 29.664 | 5 096 79.5 13 <a 
June, .. eisatk ihe 29.515 +18 | 149 80.8 ae 
Me 1, voupeg eal 2Ov489 | 026 80.1 fabs - 
PRIS rR, caste oice olde ett) 2IOO L 021 80.0 | 0.7 a 
September, ..........0... 29.650 | 15 fF 182 79.3 Of ?3 
October, ......2..0-2 seen} 29.837 |] 2 J 187 74.7 | on | 3 
November, ...........-- .| 29.997 1|5) 160 64.9 rel 
December, ........ «-....| 30.998 J | {| 001 Ba” lJ 
* Viz. a 22 to 1000. 
