50 On the prevailing Storms of the Atlantic Coast. 
of this hypothesis, there are persons who suppose that in stormy sea- 
sons there is, in our climate, a constant tendency to the recurrence 
of bad weather on the third, fifth and seventh days from the date of 
2 given storm, and this is more. particularly noticed on the seventh 
days, especially when the storm may happen to fall on Sundays. 
The records of the weather for the more stormy part of the last three 
years, if carefully examined, will be thought to accord with this opin- 
ion, particularly as regards the seventh day storms. These have 
sometimes occurred for many weeks in succession, and in some cases 
of failure, have appeared within twelve hours, sooner or later, of the 
assumed period. If this idea of the subject be well founded, it may 
he interesting to inquire whether this peculiarity in the weather be 
not the origin of those diurnal indications, which prevail in some of 
the febrile diseases of our climate. 
The foregoing view of the character of our easterly storms tends 
to show more clearly the general uniformity and extent of the great 
atmospheric current of westerly winds, which sweeps over a consid- 
erable portion of our- continent, and of the Northern Atlantic. It 
also strengthens the opinion which we have entertained, that these 
westerly winds, together with the trades which originate them, form 
but a portion of a great circuit or system of winds, whose revolu- 
tions are constantly, though i in some parts, irregularly, maintained, in 
the atmosphere which is incumbent upon the greater part of the At- 
lantic ocean and a large portion of the mdse continents ; and that 
this revolution, varying in its sphere with the change of seasons, is 
cept in constant activity by the causes which produce the trade 
winds. ‘The same winds produce also in their turn, the great sys- 
tem or circuit, of oceanic currents, comprising the equatorial, the 
gulf stream, the aretic current, and also their numerous appendant 
currents, often of a gyrating and varying character, like that of the 
bay of Biscay. The center of this oceanic revolution is found in 
that great eddy of the Atlantic which is called the grassy sea, lying 
between the parallels of 20° and 35° of north latitude, and the 28th 
and 60th merdians of longitude west from Greenwich. We have 
the satisfaction to find, on referring to an able and interesting outline 
of our physical geography and climate, that this great and continued 
revolution in the atmosphere of the Atlantic basin is supported by | 
irrefragable evidence drawn from a valuable collection of meteoro- 
logical tables, which have been compiled from numerous observa- 
