174 Foreign Literature and Science. 
18. Action of the Moon on the Atmosphere——The Bib. 
Univ. for Dec. 1827, contains a valuable memoir on this sub- 
ject by M. FLavcEraues, ite at Viviers in France. 
The author observes that ma cael have been 
engaged in researches on Bi action of the n upon the 
barometer, but that their labors have not been invented with 
very oe navies results. Nor have the labors of meteorolo- 
gists been much more ee cessful, The observations of some 
of these are contradictory and irreconcilable with each oth- 
er. Several have zaterrel that the barometer is higher du- 
ring the time the moon is in perigee than when she is in apo- 
gee; and others, that the mean height is greater in the sy- 
zygies than in the quadratures; but other observers, have 
drawn opposite conclusions. The results of different years 
dg not correspond. The fault may in many cases have lain 
n the instruments, which for want of proper care and man- 
apetiiont are liable to deteriorate. Considering also the ma- 
irregularities, which attend the moon’s motion, it is only 
by a long series of observations, that correct and satisfacto- 
ry deductions can be formed. The author describes at 
which he observed to ensure accuracy in his observations. 
He extended his researches throughout a whole Saros or lu- 
nar cycle, and sums up the result as follows :— 
Table of the mean foahs at noon, of the barometer, at the observatory 
FA odbe Ny in the aan of the Moon, in oe ei ah a Peri, nie 4 of th that 
nary, 
of nineteen years, (otk Oct. 5806 eek Oct. 18a 
s Number} Mean 
LUNAR POINTS. alt Fos te or aie: 
ae |. tion eter tres. 
pou. lig. | m. m. 
Mean general height, - =. + . = | 6915 | 27 11.29 | 755.44 
Conjunction, or ne MOM, at eS 234 | 27 11.27 | 755.39 
First Octant, _ = 2 « - 234 27 11.26: | 755.37 
First 3 eee 234 | 27 11.26 | 755.37 
Secon 2 —. . «| 6 | OY ODE) 964s 
Opposition, or full Moon, - > ‘ 234 | 27 11.20 | 755.23 
Third Octant, - + 6 92. = + | 984°] 97 11.47 | 758.70 
qjusdrature;: =e a fos, 234 | 27 11.68 } 756.32 
ourth Octant, - - = = . .{| 9235 | 27 11.81 | 756.4 
ai pe MES sos | - a5 | 9711-49 | 786.98 
‘ -  . «| 258 | 27 11.28 | 755.42 
252 27 10.97 | 754.72 
252 | 27 11.46 | 755.82 
