GLEANINGS IN VEGETABLE PHYSIOLOGy, No. 2.—FOOD or PLANTS. (Continued from p. 171.) Vascular tissue is composed ..
... they may be able to retain a sufficiency of moisture wherewith to combat the heat and often aridity of the atmosphere. In aquatic plants it is very thin, and on the under aide of floating o r submarine leaves there is none, neither is it regninal, for ...