PHYSICAL anv LITERARY. 303 
ART. XIX, 
Proofi of the Contiguity of the Lungs and Pler= 
ra; by ALEXANDER Monro fenior, 
M. D. and P. A*. 
age experiment of opening the thorax 
without hurting the lungs of living 
animals, while the trunks of their bodies 
are immerfed in water, through which no 
bubbles of air rife after the perforation, 
as propofed by the ingenious Lieberkuhn, 
and executed by the illuftrious Haller f, 
is a decifive one, if rightly performed, for 
proving no’ air between the pleura and 
' Jungs. But, as an unwary operator may 
wound the lungs in perforating the thorax, 
when air would certainly rife in the wa- 
ter, from which the exiftence of air in the 
thorax might be concluded, and feveral 
other circumftances may, and: have cau-_ 
fed the conclufion’ from this experiment 
_ to be difputed; it may not be amifs to 
4 Mention fome eafier ways of proving the 
; non-= 
® February.7. 1754. 
F Opufe. de refpirat. 
