SUGGESTIONS ON LABORATORY WORK 
499 
must be held absolutely responsible for all details of the 
work which requires almost daily attention from seed 
sowing until the close of the college term. The students 
usually become very much interested in garden making, 
and under favorable conditions succeed remarkably well, 
considering that only a small portion of their time can be 
devoted to this work. (See Figures 108, 109 and no.) 
Numerous plans of intercropping may be employed in 
FIG. 108. STUDENT GARDENS AT THE PENNSYLVANIA 
STATE COLLEGE 
student gardens. (3) Frequent problems should be 
given in connection with courses in vegetable gardening. 
The students should be required to prepare definite plans 
and directions for the planting of home gardens, market 
gardens and truck farms. There is no limit to the num- 
ber of practical problems that may be assigned relating 
to every phase of garden work. For example, what are 
the seed, hotbed and cold frame requirements to grow 
enough plants for 10 acres of early cabbage intercropped 
with lettuce? And again, how much and what kinds of 
