220 DOVE ON THE LAW OF STORMS, 
When navigators are overtaken by a rotatory storm, the fol- 
lowing are practical rules for escaping from its influence as soon 
as possible :— 
1. In the northern temperate zone :—If the gale begin from 
the S.E. and veer by S. to W., the ship should steer to the 
S.E., for she is on the south-eastern part of the storm. If, on 
the contrary, it begin from the N.E. and change through N. 
to N.W., the vessel shouid steer north-westward, for she is in 
the north-western half of the storm. 
2. In the northern part of the torrid zone :—If the storm set 
in from the N.E. and the wind change through E, to S.E., the 
ship should steer N.E., for she is in the north-eastern part of 
the storm; if it begin from the N.W. and change by W. to 
S.W., steer towards the S.W., for the vessel is on the south- 
western side of the storm. 
3. In the southern part of the torrid zone :—If the wind set 
in from the S.E. and alter by S. to S.W., the ship must steer 
N.W., for she is on the north-western side of the storm; but 
if the gale begin from E. and pass through N. to N.W., steer 
S.E., for the vessel is on the south-eastern side of the storm. 
4. In the southern temperate zone :—If the gale set in from 
the N.E. and veer by N. to N.W., steer towards the N.E.; but 
if it begin from the S.E. and change through S. towards S8.W., 
steer to the S.W., for in the first case the ship is on the north- 
eastern, and in the second on the south-western side of the storm, 
If our examination of storms of the temperate zone has pointed 
to the hurricanes of the tropics as their source, we do not there- 
fore conclude that causes originating these phenomena may not 
also exist in the middle latitudes. The violent tempests of the 
Black Sea and the Levant, which usually mark the beginning 
of the rainy season in those regions, and which, on that account, 
are called “ Temporales,” appear to owe their intensity to local 
conditions. But we possess no detailed account of the direction 
in which these storms move, and of the order of change in the 
indications of the wind vane during their prevalence. The ab- 
sence of such information in regard to seas so much frequented 
is a remarkable circumstance, and is much to be regretted. 
[M. Dove concludes his memoir with a very interesting d 
scription of the effects of the storm of the 10th of October, 17 80, 
which it seems unnecessary to repeat to the English reader who 
has access to Colonel Reid’s work, from which it is taken.] 
