1 86 MILLER. 



DESCRIPTION OF PLATE VIII. 



Fig. 9. Corrosion specimen of the lung of the domestic fowl. 



Fig. 10. Free hand model of the tip of the bronchus of the lower lobe of a 

 foetal cat just before birth. X 18 times. 



Fig. II. Wax corrosion of three terminal bronchi. The upper one shows the 

 club shaped expansion ; the two lateral show the atria injected. X 6 times. 



Fig. 12. Wood's metal corrosion of dog's lung. Shows terminal bronchi, atria 

 and air-sacs. X 10 times. 



Fig. 13. Celloidin corrosion of the artery and bronchus of a dog's lung. A. 

 Artery ; B. Bronchus. X 10 times. 



Fig. 14. Celloidin corrosion of artery of dog's lung. L. Lobular artery ; A} 

 A.^ A.^ A.* the branches within the lobule corresponding to the atria ; A. S. 

 branches to air-sac. X 10 times. 



Fig. 15. Triple injection with celloidin, digested in pepsin solution. The 

 injection of the bronchus is not quite complete. A. Artery ; B. Bronchus ; V. 

 Vein. X 10 times. 



Fig. 16. Reconstruction from sections of an air-sac and its blood vessels. 

 X 50 times. A. Artery ; V. Vein ; X cut surface from which another air-sac has 

 been removed. 



