526 



INDEX 



Curtains for laying houses, 120 

 Customers' interests, 426 



Dampness, bad effect of, 48 

 Danish egg packing industry, 39 



poultry house, 38 

 Delivery of products, 427 

 Demand vs. supply, 32 

 Denmark, poultry farming in, 38 

 Depluming mites, 510 

 Dermanyssus gallinse, 508 

 Design of houses, simplicity of, 111 



to insure economy of labor, 53 

 Details, importance of, 273 

 Diagnosis of disease, 500, 501 

 Diary, 463 

 Digestibility, factors affecting, 174 



ground grains, 181 

 Digestion coefficient denned, 174 



experiments, what they show, 176, 177 



relation of food to, 173 

 Digestive system, organs of, 296 



tract, 296 



Dimorphism, sexual, 261 

 Disease, diagnosis, 500, 501 



inheritance of, 227 



of poultry, 503 



prevention of, 497 



transmission by water, 499 



treating, 496 



when to treat, 496 

 Diseases, 496 

 Disinfecting solution, 498 

 Dislocating neck, 410 

 Disposition of egg breeds, 79 



of general-purpose breeds, 87 



of meat breeds, 84 

 Distribution of poultry, 10 

 Doctoring poultry, 496 

 Dominant, how to test for, 232 



meaning in Mendel's law, 231 

 Doors, 119 

 Dorking, origin of, 73 



possibility of, 93 

 Double matings, example of, 261 



yarding, advantages of, 159 



methods of, 160 

 Drainage, 51 



air, 51 



soil, 50 



surface, 50 



undsr foundation, 126 



Dressed poultry, marketing, 444 



score card for, 491 



Dressing, 417 



Drinking vessels, design, 155 

 location, 155 



Dropping boards, location and design, 146 



Droppings, care of, 272 



Dry-mash, California, 219 

 Cornell, 219 



mixer, location and usage, 206 

 New Jersey State (summer), 217 

 New Jersey State (winter), 216 

 possibilities, 213 



Dry picking, 411, 413, 415 



Duck raising, rise of, 21 



Dust boxes, 151 



Dusting material, 152 



Economic factors, adjustment of, 58 

 Economy in handling layers, 275 

 Educational associations, 4 



exhibitions, 476 

 Egg breeds as sitters, 80 

 circles, 450 

 classification of, 78 

 composition of, 196 

 description of type, 78 

 disposition of, 79 

 dry matter in, 305 

 eating, cause of, 279 



prevention of, 279 

 exhibits, 473 

 expulsion of, 302 

 farming, combinations with, 26 



locations for, 44 

 fertilization of, 301 

 foraging abilities, 80 

 formation of, 300 

 grades of, 440 

 hardiness of, 80 

 maturity of, 79 

 ovens, Egyptian, 326 

 packages, 436 

 pail, 287 

 parts of, 302 



passage down oviduct, 301 

 preservation, 441 



producing States, conditions in, 11 

 production, as affected by physical 

 condition, 180 



as affected by temperature, 266 



breeding for, 252 



controlling factors in, 267 



distribution of, 235 



feeding for, 176 



from pure breeds, 96 



