TABLE PAGE 



72. Egg production means by strain (treatment ignored) and by 



treatment group for house 200 229 



73- Egg production means by strain (treatment ignored) and by 



treatment group for houses 100 and 200 combined 230 



Ik. Egg production means by week (treatment ignored) and by 



treatment group in the caged-layer trial at Chipley, Fl 231 



75- T-test of sgg production treatment means by strain from 



the caged-layer trial at Chipley, Fl 23^ 



76. Egg production means when each quarter of house 200 was 



analyzed as a separate treatment 235 



77- Egg production means, pre- and post-treatment mite popula- 

 tion means, and the change in mite population numbers on 

 untreated hens from the caged-layer trial at Chipley, Fl 236 



78. Mean operator and tractor time, and the amount of fuel 

 required to till one 91.4-m California-style poultry 

 house 245 



XI 



