4a PLANT PHYSIOLOGY 



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

 w..rk is possible with them when no better arrangements are 

 available. 



FIG. 6. GROUND PLAN OF PHYSIOLOGICAL LABORATORY; 

 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- 



