1 868 The Cornell Reading-Courses 



{In answering questions, attach additional paper if needed and number the 

 answers.) 



I. Name the four factors essential for successful incubation. 



2 . What are the characteristics of the diffusion type and the radiation 

 type of incubator? 



3. Why is a cellar preferable to a room above ground, for incubation 

 purposes? 



