58 
tion. Anything that reduces protoplasmic activity will there 
fore reduce transpiration. 
II. Experiments on protoplasmic movements. 
persicum esculentum. These sections were placed in a hang 
ing drop of water without a cover glass, with a suitable i 
rangement to ex : ‘ 
any desired moment. Only a very short period (2 of S| 
seconds) was sufficient to cause the protoplasm to collect 
spheroidal masses which after a shorter or longer period 
turned to the normal condition. The following are some ® 
the results obtained. | 
Conditions of light, temperature, and moisture were 7 
Stant in all the experiments. 
1. Primula Stnensts, 
umbers indicate time, in seconds, required for a certain protoplasm 
granule to move 10 je * 
First experiment. : 
Normal: 5.4 6, 5, 4,5, 5, 4, 6, 5, 5, 4, 5, etc. . 1 
After momentary exposure to ether vapor, 4, 5, 5, 6, 6, 7, 6, 7, 7 8, 8 4 7 
9, 10, 10, ro, al 
Remained Stationary at about 10 then returned to normal: 10, 9, 1% 
8.7.7.7, 6,5, 5. ; 
Second experiment ; fresh sections, 
Normal; 5, 6, 7, 5, 6, 5, 6, 5, 5, 6, 6, 5, 6, 6, 5, ete. ‘ 
Exposed to ether vapor for 2 seconds; 6, 7, 7, 8, 9, 11, 11, 13, 14% - 7 
14, 14, 14, 
Remained stationary at about 14 then returned to normal: 14, © 
13, 12, ete, ; 
