PRENATAL AND NEONATAL LUNG 



205 





•$'.j 'sa. 



•,^^^^^'^-% 



M ^m^^'^ 





Fig. 1 Fetal lung of dog. at end of gestation. X 62. 



Fig. 2 ' Fetal lung of dog, at end of gestation, with the granular reticular 

 substance in the spaces, and two of the free mononuclear cells. X 280. 



