[ 49 1 ] 
What firft induced me to enter upon this Courfe,, 
was, that I might experimentally difcover the In- 
fluences of our different Seafons upon the Human 
Body i by which I might arrive at fome more certain 
Knowledge of the Caufcs of our epidemic Difeafes, 
which as regularly return at their Bated Seafons, as a 
good Clock ftnkes Twelve when the Sun is in the 
Meridian ; and therefore mud proceed from fome 
general Caufe operating uniformly in the returning 
different Seafons. 
Keily indeed, has obliged the W orld with his Sta- 
tical Experiments , but thefe his extenfive Practice 
made lefs perfect than he could have wifhed, having 
many deficient Days, and he feldom gives the diurnal 
Perfpiration. Had thefe been carried on with all the 
Conftancy poflible, they could not have fo clearly 
demonftrated the Changes made in the Animal Oeco- 
nomy, in the feveral Seafons, as would a Courfe of 
fuch Experiments made in our Clime, where thofc 
Influences are in a much more eminent Degree ; and 
where the Excurfions from Heat to Cold are very 
confiderable, and often fudden, I having feen 30 
Degrees Difference in 24 Hours by Fahrenheit’s 
Thermometer. 
SanFtoriuSj it is true, lived in a warm Climate, and 
has deduced many ufeful Aphorifms from his Expe- 
riments ; but then he has not left us the Experiments 
themfelves: Hence we are not only deprived of the 
Authorities from whence he deduced his Aphorifms, 
but likewife of a long-continued Series of Experi- 
ments; from whence the Changes induced upon the 
human Frame, in the different Seafons, might have 
experimentally appeared. 
From 
