1896.] Water Current in Cucumber Plants. 557° 
4. MOVEMENT oF WATER THROUGH BoILED STEMS Nor 
SEVERED FROM THE PLANT.. 
(No. 11). A fine thrifty vine, 180 centimeters long, bearing 
18 large leaves and half as many more small ones. The larg- 
est leaves have a spread of 17 to 19 centimeters. March 21, 
4:00 p.m. About 35 cm. from. the earth, the bright green 
stem was bent over and immersed for a distance of 20 cm. in 
hot water. An attempt was made to boil this water but the 
heat under the basin was not sufficient, although ample to 
kill the stem. 4:30 p.m. The temperature of the water dur- 
ing the last half hour has risen from 71° C. to 75° C. There 
is no change in the color of the immersed part of the stem, 
nor any change in the foliage above, but the effect of the hot 
water is already noticeable in the very decided shrinkage of 
the immersed stem. It has shrunk in diameter nearly one- 
half. 4:50 p.m. During the last 20 minutes the temperature 
of the water has risen only one degree. This was now poured 
out and water at 89° C. substituted. In pouring, the temper- 
ature fell to 85° C. In this hotter water the stem quickly be- 
came paler green. 4:58 p.m. Temp. of water 80° C. The 
- Immersed part of the stem has now shrunk to one-third of its 
normal diameter, and this shrinkage has extended both up 
and down, for a short distance out of the water (a few centi- 
meters). 5:15 p.m. Temp. now down to 76° C. Stem taken 
out. Except the apex of one leaf, 15 cm. up, the foliage did 
not become flabby. Below the boiled part is a small branch 
with half a dozen leaves, sufficient to carry the roots. March 
22,11 a.m. The boiled part of the stem, which is now dry 
and greenish-brown, was wrapped in many folds of rubber 
cloth. The foliage of this vine shows no wilt, except parts of 
5 small leaves, which were near the boiled part and may have 
been injured by the heat of the lamp. It is windy and sunny 
and the air of the house is rather dry so that transpiration 
is active. Temperature in shade, 1 foot above the bench, 26° 
C. Noon. A check vine (cut off at base, yesterday p. m.) has 
wilted and shriveled. Temperature three feet above the bench, 
among the leaves, 30° C. 1:20 p.m. No change. What is 
