1010 



The three boughs were cut ofl" at the same time, about 9.20; 

 the weighino- of the (irsl bough took place therefore about five 

 miuutes, that of the other two fifteen aiul twenty minutes after 

 cutting. Whether the transpiiatiou in the interval between cutting 

 off and the first weighing changed noticeablj, cannot be ascer- 

 tained, but what is important is that the behaviour of the three 

 boughs agrees, for they all, "/^ — 1 hour after the cutting (when they 

 had lost from J"/,, to 47„ of their weight by transpii-ation) show a 

 distiuct rise in the intensity of transpiratiou, which about two hours 



