SUGGESTIONS ON LABORATORY WORK 50I 



Chapter VIII, Irrigation. — Study the various parts 

 used in the overhead system of irrigation. 



Chapter IX, Insect Enemies and Diseases. — (i) 

 Study the various types of nozzles and pumps. (2) 

 Prepare spraying mixtures, unless this experience has 

 been gained in previous courses. (3) Make the neces- 

 sary applications for the control of insects or diseases 

 in the assigned plats. 



Chapter X, Seeds and Seed Growing. — (i) If the 

 course is offered in the fall, there will be abundant op- 



FIG. 109. STUDENTS AT WORK IN THE GARDENS OF 

 THE PENNSYLVANIA STATE COLLEGE 



portunity for the selection, harvesting, cleaning and cur- 

 ing of seeds. (2) Make germination tests of old and new 

 seeds. 



Chapter XI, Construction of Hotbeds. — (i) Practice 

 in painting and glazing hotbed sash. (2) Construct 

 frames. (3) Select and prepare the manure and fill the 

 pit. 



Chapter XII, Construction of Cold Frames. — If 

 possible the student should have actual experience in 

 frame construction. 



