MEASURES FOR PROTECTING GROWING PLANTS FROM LOSS OF HEAT. 



537 



JZschynomene Indica, an elegant herb-like plant with papilionaceous flowers and 

 extremely delicate doubly-pinnate leaves, as well as the Indian Smithia sensitiva 

 (which likewise belongs to the Papilionacese), fold their leaflets together above, and 



rK.X.A. 



Fig. 134. Mimosa pudica in day and night positions. 



depress the common leaf -stalk directly the first rain-drop has produced a shaking. 

 The same applies to several mimosas (Mimosa pudica, sensitiva, casta, dormiens, 

 humilis, viva), of which the first, a species native in Brazil, is represented in fig. 

 134. In these mimosas there is really to be noted a threefold movement; first of 

 all the tiny leaflets fold together above, and at the same time direct themselves a 



