Li. Loomis— Observations of the U. 8. Signal Service. 7 
87, no considerable change of wind occurred on Mt. Washington. 
In No. 23 the wind on Mt. Washington blew uninterruptedly 
from the west or southwest although the center of the low area 
passed south of that station. In Nos. 88 and 87 the wind on 
Mt. Washington was strong from the west or northwest, 
have also made a comparison of those cases in which an 
area of low pressure has passed over New En land, when the 
barometer at Portland, Me., did not fall to 29°6 inches, and in 
seven-eighths of these cases during the continuance of this low 
pressure the wind on Mt. Washington did not at any time blow 
circulating winds at the surface stations, this system of circu- 
on the summit of that mountain; and the change back from 
the east to the west quarter usually begins at the base of the 
mountain five hours sooner than on the summit. 
Abnormal storm paths. 
are shown in the two following tables, one containing those 
cases in which the direction of storm paths was most northerly, 
and the other containing those cases in which their direction 
was most southerly. Table I contains various particulars 
respecting eight storms whose course was nearly from south to 
north. Column 1st shows the number of the storm; column 
2d shows the number of the observation; column 3d the date 
