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HAYDEN. 
storm, the shifts of wind, &c., he might say that at 8 a. m. 
it was blowing a moderate gale from E NE.; at noon, a 
strong gale from E.; and at 4 p. m., a hurricane from SE. 
A hurricane, then, in the broader signification of the word, 
is a cyclone of enormous intensity. This word cyclone, as 
originally coined by Piddington and adopted by Pedfield 
and other early writers, and as still used by leading author¬ 
ities, does not necessarily convey the idea of a violent storm, 
but is used as a generic term to refer to a wind system where 
the circulation is cyclonic (in the Northern hemisphere, 
against watch hands; in the Southern, with) and the baro¬ 
metric pressure below the normal. It is, I think, a pity that 
popular usage is making the meaning of the word too spe¬ 
cific, somewhat as it has made the expression “ tidal wave ” 
too generic. The following quotation from Redfield is of 
interest in this connection : 
“ The term cyclone was first proposed by Mr. Piddington 
to designate any considerable extent or area of wind which 
exhibits a turning or revolving motion, without regard to its 
varying velocity, or to the different names which are often 
applied to such winds. If used in this sense it may prevent 
the confusion which often results from other names, more 
variable or indeterminate in their signification. Thus, all 
hurricanes or violent storms may, perhaps, be considered as 
cyclones or revolving winds; but it by no means follows that 
all cyclones are either hurricanes, gales, or storms. For the 
word is not designed to express the degree of activity or force, 
which may be manifested in the moving disk or stratum of 
rotating atmosphere to which it is applied. It often desig¬ 
nates light and feeble winds, as well as those which are strong 
and violent.” 
The tracks that have been traversed by storms during each 
month of the year are valuable indications to the navigator 
regarding the probable path of a storm that he may encoun¬ 
ter during a voyage. For this reason there were plotted 
upon the Pilot Chart of the North Atlantic Ocean last year 
