20 REPORT—1843. 
atmosphere must be subject to an equal amount of lateral pressure in the opposite 
direction of rotation. But when the atmosphere was moving in the orbital direction, 
with its mean velocity of 68,000 miles an hour, which occurred only at six o'clock 
a.m, and p.m., no lateral pressure could thence result, for the rotatory and orbital 
movements of the atmosphere, through space, were then equal to, and therefore nulli- 
fied, or neutralized, its acquired velocity. The theory advanced is also supported by 
the results obtained from laborious reductions of long-continued observations made in 
different places, in temperate latitudes, by different philosophers. From these it ap- 
pears, that even in temperate latitudes the atmospheric tides attain two maxima and 
two minima annually, the former occwring during spring and autumn, the latter du- 
ring summer and winter. This, on the supposition of the theory being true, is exactly 
what ought to take place. In consequence of the rotatory and orbital movements 
coinciding more directly during night, and being more directly opposed to each other 
during day at the equinoxes than at other seasons, it is in accordance with the theory 
under consideration, that the atmospheric tides should attain their maxima about these 
periods of the year; and upon the same principle, in consequence of the greater di- 
vergence of these forces from exact cooperation with or opposition to each other at the 
summer and winter solstices than at other seasons, it is also in accordance with our 
theory, that the atmospheric tides should attain their maxima about these periods of 
the year. 

Meteorological Register for 1842-43, from Diurnal Observations taken at 
_ Beddgelert in the county of Carnarvon. By Joun PRICHARD. 





Barometer. | sanetor, Wind. ore} Eien 
g.d| gd }el¢ 2/2 #/2| |e 2 
=e") 3 a BE $ lak $ 
caiaiy EER E | E e\s € gleis rf s EEE Hig le 
Lad s & of a = a =] 2 =e! LBM ie | a 
S-2) 8 /s/ 8 l2l2zl2lelelélslal|es2lelelais 
1842. 
June .....| 30-07 | 29:22] 69 | 52 |... |... 6| 2} 5| 2/141 1] 542] aol 3l...| 7 
July .....| 30-15 |29-10| 64 | 52 | 4| 1|11| 4 9 827171 5|..| 9 
August ..| 30°17| 99-41] 68 | 50| 1| 2] 3| 2 4 91 ..| 42{ 19} al) a 
Sept. ...| 30°03 | 29-00] 62 | 48 |... |... 12 11 2.|...| 1017! 754] 19] 4] 8 
October.| 30-27 | 28-32] 54 | 32] 9 4| 9}... |... | al 5] 45a] asl él | 6 
Nov. ....| 3016 | 98-06 50} 36|...{ 1| 3} 3/1] 1) 1/10/ 11-96] 11/12]...| 7 
Dec. _...| 30-20 | 28-85] 56 | 36 6| 4} 1| 1/18) 1| 7-65} 8|12|...] 11 
1843. 
January .| 30-20|28-30| 52 | 30 | 6|...| 7| 4|...|..| 14]...| 5:35] 8/10] 3 | 10 
February| 29-80 |2855| 46 | 20 | 6| 2/ 3| 1) 1| 2] 211) 165137; 1/1] 9 
March...| 30-08 98-801 56 | 27 | 1|...| 2} 1} 3| 1/14] 9| 3-42| 18] 3/...| 10 
April ...| 29-75 |28-80| 52 | 32 | 2//4| 5| 11...|...| 17/ 1] 806| 9|10/3| 8 
May .....| 29°93 | 29-10] 53 | 42 | 2 4| 1|'3| 611] 5| 369} 43} 4{..| 14 
31/14/71 | 24|15| 17 (143 50| 71-36 [176 71| 8 [110 





Beddgelert is situate on the south-west side of the Snowdonian range of mountains in the 
county of Carnarvon, North Wales. 
On the Correction to be applied for Moisture to the Barometric Formula. 
By J. Avsoun, M.D. 
If the atmosphere were of one uniform temperature throughout, destitute of moisture, 
and the intensity of gravity were also constant, it is well known that the difference of 
the altitudes of any two points in the atmosphere would be represented correctly by 
t 
the formula D = m x log m being a constant quantity, and p and p! being the 
