LIST OF ILLUSTRATIONS. 



?IG. PAGE.. 



Skeleton and soft parts of a fowl (Megnin) 



, FRONTISPIECE. 



1 Lung-s of a fowl (Meg-nin) . . . .27 



2 Head of fowl affected with contagious catarrh 

 (Megnin) . . .... 33 



3 Right lung of a goose (Owen) . . .83 



4 Lung of a bird in ideal section (Williams) . 39 



5 A pair of syngames (Megnin) . . .42 



6 Development of Syngamus trachealis (Meg-nin) 43 

 Diagram illustrating- manner of removing- syn- 

 games with wire, horse-hair or feather. . 43 



7 Reproductive org-ans of syngames; pair of syn- 

 games illustrating attachment to mucous mem- 

 brane (Megnin). . . . . .45 



8 Chicken affected with gapes (Garman, Ky. Agl. 

 Exp. Station) ..... 47 



9 Diagrammatic representation of the air sacs 

 (Heider) . . . . . . .57 



1) Aspergillus glaucus (Cadeac) . . . 59 . 



11 Aspergillus fumigatus (Ziegler) . . .59 



12 Cytodites ntidus, male (Railliet) ... 62 



13 Cytodites nudus, female (Railliet) . . .64 



14 Digestive apparatus of a fowl (Chauveau) . 67 



15 Microscopic elements of thrush (Robin) . . 73 



16 Gastric glands of birds (Owen) ... 85 



17 Caeca of healthy turkey (Smith, Bur. An. Industry) 104 



18 Diseased cseca, entero-hepatitis (Moore, Bur. An. 

 Ind.) . . . . . . .105 



19 Liver of healthy turkey (Moore, Bur. An. Industry) 106 



20 Diseased liver, entero-hepatitis (Moore, Bur. An. 

 Ind.) ....... 107 



