584 



INDEX 



Trench for founidation, 125 

 Troughs for feeding, 152 

 lurning eggs in incubation, 339 

 Two-thirds span house, specifications, 135 

 Type defined, 71 



for egg production, 237 



of incubators, 331 



of laying houses, 110 



U 

 Under color, importance of, 263 

 Uniformity of eggs, 97 



of flocks, 98 

 Unit of protein, cost of, 211 



standard multiple-unit house, 113 

 United States census table, 8 

 Utility classification, 66, 78 



exhibitions, 475 



fancy combined with, 23 



quality, score card for, 490 



score card, use of, 491 



types compared, 88 



Value, basis of, 224 

 Variation, causes of, 239 



functional, 238 



laws of, 235 



meristic, 238 



morphological, 236 



principles of, 235 



substantive, 237 



types of, 236 

 Varieties, number of, 66 

 Variety defined, 70 



necessity in feeding, 180 

 Vegetable cutter, 206 

 Vegetables, composition of, 198, 200 

 Vent, changes due to laying, 536, 53£ 

 Ventilation, automatic, 108 



in incubator cellar, 329, 340 



in poultry houses, 108 

 Vigor, cause of lack of, 255 



constitutional, 254 



importance of, 254, 534 



selection for, 102 

 Vineland District, New Jersey, 15 

 Vital question, profitable production, S5 

 Vitality, signs of high, 256 



of low, 256 

 Vitelline membrane, 301 

 ViteUus defined, 301 



Walls, materials for, 118 



War, as affecting poultry industry, ri'^C 



Washing birds, 479 



Waste products, 31 



Water, elevating for storage, 49 



for chicks, 359 



importance of fresh, 49 



in eggs, 184 



in fowl's body, 170 



necessity of, 173, 180 



sources of, 49, 184 



uses of, 173 

 Water-glass, use of, 441 

 Weaning chicks, 324, 368 

 Weasels, 512 

 Weight, 102 



Weights of breeds, table, 70 

 Wet mash, 213 

 Wheat as a poultry food, 187, 193 



bran, composition, 193 

 manufacture, 187 



flour, 187 



middUngs, 187, 193 



screening, 188 

 Whey, 196 

 White diarrhuea, 364 

 White-faced Black Spanish, origin, 73 

 Windows, arrangement, 106 



for laying house, 120 

 Wings, 292 

 Winter quarters, 269 

 Wire, poultry fencing, 163 

 Working plans, half-monitor housO; 13? 

 long laying house, 132 

 portable laying house, 140 

 two-thirds span house, 135 

 Wyandottes, 71, 91 



Yarding, double, 159 

 Yards and yarding, 158 



clean, 499 



cost of, 159 



crop rotation for, 160 



shape of, 159 



size of, 158 



vs. free range, 158 

 Yellow pigment, reappearance of. 

 Yolk, 304 

 Youug stock, record, 461 



