460 



WILLIAM A. LOCY AND OLOF LARSELL 



:.Jl' 



IV III 



4-- Pul.Vn. 



Fig. 8 Dissection exposing tlie lung and adjacent territory in a specimen of 

 4^ days development (114 hours). Drawn by G. H. A. Rech. 



Fig. 9 Side view of a dissection of the lung territory during the last half of 

 the fifth day of incubation. 



Fig. 10 Ventral asj)eet of the same specimen illustrating the apparent asym- 

 metry of the lungs. 



