xviii LABORATORY EXERCISES 



45. Building the Walls 184 



46. Lajdng the Roofing Boards 185 



47. Laying the Finished or Top Floor 185 



48. Miscellaneous Construction to Finish the House 186 



49. Amount and Value of Poultry Manure 196 



50. The Proper Perch Room for Birds 196 



51. Types of Dry Mash Hoppers 197 



52. A Good Dust Bath 197 



53. A Study of Poultry Houses 209 



54. Drawing Poultry Apphances 209 



55. Materials for Poultry Houses 210 



56. Composition of a Bird's Body 216 



57. Composition of Poultry Feeds 216 



58. Diffusion a Process of Assimilation 222 



59. A Study of the Digestive Tract 222 



60. Identifying Poultry Feeds 232 



61. A Study of Seeds and Growing Plants 240 



62. The Unabsorbed Yolk in the Young Chick 249 



63. Mixing Chick Rations 250 



64. Feeding Young Chicks 250 



65. Mixing La3ring Rations 261 



66. Feeding Lajdng Hens 261 



67. A Comparison of Flock and Crate Fattening 270 



68. Fresh and Held Eggs, A Comparison 281 



69. Weight of Eggs 281 



70. Weight of Broilers 282 



71. Curing Feathers for Marketing 282 



72. Grading and Packing Market Eggs 292 



73. Sticking and Dry Picking Poultry 292 



74. Packages for Shipping Poultry Products 293 



75. A Study of Markets and Prices 300 



76. Marketing Trips 300 



77. Cleaning the Poultry House 306 



78. Mixing a Disinfecting Solution 307 



79. Cleansing the Poultry Yard 307 



80. Chicken Pox, Roup and Canker 315 



81. Potassium Permanganate Solution 315 



82. Diagnosis of Diseases 316 



83. A Study of Body Lice 322 



84. A Study of Red Mites 322 



85. Treating Scaly Legs 322 



86. Combating Enemies of Poultry 323 



87. Locating Centers of Poultry Production in the United States . . 329 



88. Making Poultry Records 338 



89. A Simple Account Sheet 338 



90. Writing an Advertisement 338 



Note. — Score Cards for Judging all Classes of Poultry on Pages 

 349-352. 



