112 Surgery.—Compreffed Air. 
Repeated experiments have convinced him that one of the’ 
moft frequent caufes of the apparent death of fo many new- 
born children, arifes from the trachea being filled with 
water ; and that they might in general be faved, by giving 
them fuch a pofition that the water fhould run out. Of 
thirteen children confidered’as dead, and which were com- 
mitted to his care, twelve were reftored to life by the above 
fimple means. 
The above is announced in a waka Journal, but appears 
evidently to be founded upon fome miftake. By the experi- 
ments of Dr. Goodwyn it appears impoffible that water can 
of itfelf in any cafe enter the trachea: even drowned peo- 
ple are not fuffocated by this means, but by the mere ex- 
clufion of the oxygen of the atmofphere neceffary to fupport 
animal life. In thofe experiments in which water has been 
forced into the trachea, it has always been abforbed, if the 
animal was {uffered to live. 
In our laft Number, (p. 426.) by amiftake of the Printer, 
the following obfervation was omitted after the article on the 
production of cold by compreffed air: 
The explanation given of the phenomena in the Journal 
de Phyfique, from which we extracted this article, is inad- 
miffible in the prefent inftance ; for it has been proved by © 
Dr. Darwin’s experiments, publithed in the Philofophical 
Tranfations, that cold is produced by compreffing air even 
where water is not prefent, and that the heat of the air is 
abfolutely fqueezed out by condenfation, and pafles out 
through the fubftance of the condenfer. The compreffed 
air therefore, when allowed to efcape, muft rob water, or 
any fubftance with which it comes in contaét, of a portion 
of its heat. 
