X 
4. To keep aTegilter of ad changes of Wind 
and Weather at all hours by Slight and by 
Day, fh easing the point, the Wind blows from, 
whether frong or we of : The Tains , Hail, 
Snow, and the like • the precife times of their 
beginnings and continuance : efpecially Hur- 
ricans, and Spouts ; but above all to taky ex~ 
oB care to obferve the T rade-Winds > about 
what degrees of Latitude and Longitude 
they frfl begin , where and when they ceafe 
or change , or grow fronger or weaker , and 
how much ■ as near and exaU as may be. 
rpHe ftrength of the Winds is meafured by an Inftrumem , fuch 
JL as is represented by Figure 6 $ which being expofed to the 
Wind , fo as the flat fide may be right againft it , the number of 
Degrees upon the Limb A B , to which the Wind blows up, orrah 
fes, that flat fide C Z) 5 fliews the force or ftrength of the Wind, in 
proportion to the refiftanee of the flat fide of the Inftrumem 3 
and istobexecorded. 
