IM. CONFINED IN STAGNANT AIR. 69 
fects ; and nature has afforded, thofe illuftrations 
which former, authors have fought in vain. 
From effe&ts I afcended to .canfes, and invef- 
tigated why,confined air could, ;in certain fitua- 
tions, .be injurious to animated beings. ‘Thus, 
pafling from one refearch tg another, the work 
anfenfibly increafed in my hands, and became 
much more.confiderable than I expected. Since 
I now prefume to publifh it, that the tedium.of 
the reader may be leffened, it is divided into three 
Sections or chapters. The principal. objeéts of the 
two laft are,refearches on the caufe of animals 
dying in, confined air; and, the firft.comprehends 
.a view of thofe beings. that are fubject to its influ- 
cence only in.certain circumftances. 
CHAP. I. 
“INFUSIONS, VEGETABLE SEEDS, ANIMALS EGGS, AND 
ANIMALS THEMSELVES, SUBJECTED TO STAGNANT 
AIR. j 
J PROVIDED a certain ‘number of vefiels: En 
each I put an infufion of vegetable feeds, and 
-then fealed them hermetically. They were made 
exprefsly for the purpofe, large, and each might 
2 contain 
