xvUi rhe PREFACE. 
Motions bj a fuitable Series of Ex- 
periments. The difagreeablenefs of 
the Work did long difcourage me 
from engaging in it ; but I was on 
the other hand fpurred on by the 
hopes that we might thereby get 
fome farther Infight into the animal 
OEconomy. We find here a large 
Field for Experiments, which may 
be multiplied and varied many 
Ways, oi which I have here only 
given a few Specimens. As thefe 
Experiments do obvioufly and clear- 
ly give an Account of fome Phajw- 
mena^ fo they may pofiibly be of 
Service in the Hands of thofe who 
are well skilled in the animal OEco- 
nomy and the Eliftory of Difeafes, 
to explain many other of the innu- 
merable Variety of Cafes, which oc- 
cur in fo complicated aSubjed: as an. 
animal Body is. 
In 
