( 398 ) 
know how to order his Courfe fo, as to arrive with the 
moft probable Difpatch to his Port. 
It may not be impoflible alfo, from a protracted Series 
of Sea Obfervations , not only to know the general 
Courfe of the Winds in every Climate in the whole 
Year, but alfo to make a very probable Judgment of the 
reigning Winds of the feveral Seafons of the Tear , and 
perhaps of every Month too : Which if it could once 
be obtained, we (hould have nothing more uncertain in 
Navigation , than that it was a TOodirine of Chances , 
which might be mathematically calculated. 
I lhall mention under this Head but one thing more, 
which we may with all the Probability imaginable ex- 
pe& to arrive to, viz. the particular Seafons, Signs, and 
Places of the Tornados and Hurricanes . The EffeCt 
of thefe are in many Cafes fo fatal, that they call for 
all our Skill and Obfervation : And could the Hiftory 
hereof be fo fucceffively known, as that we might be 
able to draw any certain Conclusions from it relating 
hereunto, it might perhaps be a fufheient Recompence 
for all the Care, that is requir’d, in the whole Collection 
of Marine Obfervations. 
I might add in common to the two foregoing Heads, 
that the Marine Obfervations have much the Advan- 
tage of fuch as are made on Land , (which notwithftand- 
ing are of very great Service,) inafmuch as they are 
not obnoxious to any external Accidents, as thefe are ; 
the Winds afhore being frequently interrupted in their 
Courfe, and often diverted therefrom, by intervening 
Mountains, Valliesor Promontories. 
Were I allowed to reckon among the Advantages of 
this New Method of obferving on the Winds and Wea- 
ther, thofe incidental Obfervations, that might be found 
