PLANTS IN GLYCOCOLL SOLUTIONS 
3. The process of absorption of glycocoll is not connected with the 
transpirational water loss, but with the differential permeability of the 
absorbing root cells, with the efficiency of the nutritive metabolism 
characteristic of the plant and the amount of water retained within 
the plants. 
Table I 
Transpiration and Growth of Scheuchzeria palustris in Glycocoll Solutions 
December 17, 1913, to January 17, 1914 
Amount of water in 
grams 
Gain or loss in weight 
Culture Solution 
Absorbed 
Transpired 
Retained 
of plants (in grams) 
Distilled water 
6.75 
6.50 
0.25 
6.55 
6.20 
0.35 
0.60 
2. 
6.00 
5-30 
0.70 
5-05 
4-50 
0.55 
1.40 
3- 
w/i,6oo glycocoll 
6.15 
5-90 
0.25 
4-65 
4.20 
0.45 
0.80 
4- 
w/3,200 glycocoll 
7.80 
7.00 
0.80 
5-28 
5.20 
0.08 
0.95 
5- 
w/6,400 glycocoll 
10.25 
9-50 
0.75 
0.85 
8.55 
8.20 
-0.15 
6. 
«/i2,8oo glycocoll 
12.30 
11.90 
0.40 
7.00 
7.10 
— O.IO 
0.40 ' 
Rhizomes in solutions 2-6 produced normal roots and roothairs. Best growth 
of roots in w/6,400 solution. 
Atmometer, 443 cc. Temperature, 8°-3i° C. Rel. humidity, 43%-ioo%. 
Barometer, 28.85-29.95 cm. 
Table II 
Transpiration and Growth of Scheuchzeria palustris in HCl Solutions 
November 23, to December 17, 1913 
Culture solution 
1. Bog water. . . 
2. w/400 HCl. . . 
3. w/800 HCl. . . 
4. m/i,6oo HCl. . 
5. m/3,200 HCl. . 
6. w/6,400 HCl. . 
7. m/i2,8oo HCl. 
Amount of water in grams 
Gain or loss in weight 
of plants (in grams) 
Absorbed 
Transpired 
Retained 
4.00 
3.60 
0.40 
0.40 + 
9.75 
9-25 
0.50 
0.50 
7-05 
6.40 
0.65 
0.65 
8.05 
7-65 
0.40 
0.40 
4-45 
3-95 
0.50 
0.50 
3-65 
3.20 
0.45 
570 
5.20 
0.50 
0.50 
Plants in bog water with roots and long roothairs. Growth of roots retarded 
in strong acid solutions. Roots brownish and slightly gelatinized in weaker acid 
solutions; roothairs occasional. Atmospheric conditions as in Table VIII. 
