42 



PLANT PHYSIOLOGY 



be carried on perfectly, to such a degree that even some college 

 work is possible with them when no better arrangements are 

 available. 



Fig. 6. — Ground plan of physiological laboratory; x t V 



A, apparatus cases, with drawers beneath; B, bookcase, C, chemicals' case, D, drawing 

 and assembling tables; S, students' work-tables; T, tool-table; W, case for balances. 



It may happen at times that greenhouse space is available, 

 but no place for a proper dark room. In this case a fair sub- 



