440 Miscellaneous Intelligence. 
On s of the phenomena attending the great tornado thun- 
dorstorm. of Iowa and Illinois, of June 3rd, 1860; by Wm. 
ichol 
oe Photography ; by Lewis M. Rutherfurd. 
Classifica of Mammals; by Theodore Gill 
aietemption periods of life-annuities oe reversions ; by E. B. 
sree F aise of a new binocular for the Microscope to be used 
with high powers; by F. A. P. Barn ce 
Report on Metric Standards; by J. E. Hilgard. 
The Basalts of Oregon, Washington, and Idaho; by R. W. 
Raymond. 
n the polarization of the atmosphere; by Prof. Poey. 
A new form of Quarternions ; by Benjamin Peirce. 
2. ) Mean Pressure of the Ba rometer and the Prevailing 
Winds over the Globe for the Months and ne the ee eet 
A., FR, 
=I 
e 
om 
ey 
2 
8 
3. 
oe 
$5: 
& 
g 
= 
= 
® 
S 
o 
ng 
*O 
aH 
? or . 
results as regards the months of J anuary and July are given by 
the author on maps in his Handy Book on Meteorology published 
two yearssince. The paper here issued contains the maps for eac 
of the twelve months, and also another for the means of the year. 
We cite a few paragraphs giving some of the conclusions 
tmospheric 
8 
igh barometer (30 inches and u ward) oo ee nearly all Asia ; 
al Sgr: south of the North and Baltic Seas ; e No ee Atlan- 
8° and 24° lat. There are also two regions of high pressure of 
comparatively small Se one in the South Atlantic, and 
the other in 2% [Pgs Pac 
on f low pr se the northern portions of the 
North Atlantic aa of the North Pacific, ee = of the 
ntinents pila wit ; the belt of low in the pater 
ich 
ttle sariation hedaghowt the e year. 
vn March, pressure diminishes over Asia, the middle and south 
of Europe, and the United States of America. Everywhere Het 
xcept in the tropics, it i Srising. This rise of pressure is most a 
ren temperate regions of the southern hemisphere. In 
the north: of Sow Atlantic it is rapidly rising, the : average pre 
|  29°609 inches, thus showin. 
anuary. 
ressure 
wing an increase of 
= 
