[ 98 J 
“ the effet of abit which young creatures have not yet ac- 
“ quired*;” and that if the air of cities be unfriendly, a fortiorz, 
fo muft the air of hofpitals in cities, and that in proportion to their 
want of ventilation. 
To thefe reafons I might have added, on the authority of 
Doctor Prieftly, that healthy animals a/mof? a/ways die of convul= 
fions on being put into air in which other animals have died, 
after breathing it as long as they could; and that moft other 
kinds of air, noxious to animal life, produce fimilar effets. See 
Experiments and Obfervations on different Kinds of Air, vol. i. 
page 71. 
Viewinc the fubjedt in this light, I propofed a number of alter- 
ations intended for the more complete ventilation of the hofpital, 
and for which I was principally indebted to Mr. White’s excellent 
work on the management of lying-in women. My obfervations 
had the effect I wifhed with Doétor Hutchefon and the medical 
governors. Apertures of a confiderable fize were made in the 
ecilings of each ward, which have been fince changed for air-pipes 
of fix inches diameter. Three holes,-of an inch diameter, were 
bored, in an oblique direction, through each window-frame at top. 
The upper part of the doors, opening into the gallery, were alfo 
perforated with a great number of holes. By thefe means a free 
and eafy paffage was given to the air through the wards at all 
times, and executed in fuch a manner as to put it out of the 
power 
* Effay concerning the Effects of Air on- human Bodies. 
