BRITISH BIRDS. 
28 l 
in g eggs without the afliftance of the hen, and that 
in great numbers at once, by means of artificial 
heat, correfponding with the warmth of the hen : 
The eggs are placed in ovens, to which an equal 
and moderate degree of heat is applied, and every 
kind of moifture or pernicious exhalation careful- 
ly avoided — by which means, and by turning the 
eggs fo that every part may enjoy alike the requi- 
fite heat, hundreds may be produced at the fame 
time. 
