INDEX 



513 



Hover, disinfecting of, 251 



portable, 234, 237 

 Hygrometer, 204 



Impaction of the crop, 483-484 

 Impregnation, influence of previous, 



111 

 Improvement by selection, 128-152 

 Inbreeding, 118-120 

 Incubation, 162-228 



artificial, cost of, 189 



history of, 186-189 

 Chinese and Egyptian method 



of, 186-189 

 cooling of eggs, 221 

 comparative reliability of nat- 

 ural and artificial, 182 

 date of hatching, 216 

 natural, 183 



cost of, 189 

 normal moisture loss in, 209 

 periods, 182 

 testing of eggs, 222 

 turning and cooling of eggs, 221 

 Incubators, accessories, 202-205 

 best means of supplying mois- 

 ture, 212-213 

 crowding eggs into, 215 

 disinfection of, 217 

 efficiency of hens as, 182-183 

 first American, 189 

 fuel for, 200 



heating system of, 197-198 

 hot-air, 198 - 

 hot-water, 198 

 humidity in, 211-213 

 insurance restrictions on, 224 

 kinds of, 191-194 

 lamps, 200 



parts of, 200 

 preparation of, 217-219 

 leveling of, 217 

 mammoth, 194 

 management of, 217-224 

 moisture in, 209-213 



artificial, 210-213 

 parts of, 190-191 

 place of operation, 205 

 position of thermometer in, 191 

 principles of operation of, 206 

 regulation device of, 194-196 

 33 



Incubators, routine of manage- 

 ment of, 217 

 size of, 194 

 starting of, 219-220 

 taking off the hatch in, 223-224 

 temperature of, 205-207, 220 

 value of, 189 

 ventilating of, 221 

 Indigestion, 488 

 Indoor brooders, requirements of, 



248 

 Infectious enterohepatitis, 399 

 Infertile eggs, advantages of, for 



market, 478 

 Ingredients, size of, 367-368 

 Inheritance of constitutional vigor, 



129 

 Insecticides, 489 



fecundity, 140-143 

 Intensive conditions, 45-47 

 Intestine, parts of, 315 



Javas, 61, 72 



Junglefowl, description of, 49 



Kafir, 334 



Kerosene brooders, 232-239 

 Killing, knife for, 428 

 methods of, 428 



La Fl^chb, 62 



Langshan, description of, 61, 66 



economic value of, 66 

 Layers, routine in feeding of, 389- 



390 

 Leg weakness, 488-489 

 Leghorns, 61, 68 ' 



history of, 68 



popularity of, 71 

 Lettuce, 352 

 Lice, 489 

 Limberneck, 492 

 Line breeding, 118-120 

 Linseed-oil meal, 348-349 

 Litter in poultry house, 296 

 Live poultry, average price of, 22 



