650 The Philippine Journal of Science 
1922 
TABLE 17.—Proportion of dry weight and ash to 100 cubic centimeters of 
transpired water. 
Humid. 
Water (cc.) 
Dry weight (g.) 
Ash (g.) 
Dry. 
Water (cc.) 
Dry weight (g.) 
‘Ash (g.) 
SERIES II. SHADED AND UNSHADED 
Seeds germinated, July 23, 1917. 
Seedlings transferred to culture flasks, July 30, 1917. 
Plants placed in shaded and unshaded chambers, August 20, 1917. 
Solutions changed, August 13, 20, and 25, and September 3, 10, 19, and 
30, 1917. 
Harvested, October 2, 1917. 
100. 
0.2901 
0.0223 
100. 
0.1292 
0.0107 
TABLE 18.—Lengths of tops and roots and total number of leaves. 
Humid. | Dry. - 
Plant No. Tal aR RORY CRE ES SEI SEY 
Length | Length | Leaves. | Le tsy: | of roots. | Leaves. 
cm, em. cm, em. 
SORES SF Sool ep tae 2 appa eee 12.0 15.5 ll 3.2 21.5 12 
Bao a Se 10.9 14.5 iu 5.5 24.5 11 
ee eh Ss ss ee 11.5 22.5 10 4.0 24.5 10 
Me te ee ae 11.0 19.5 ll 4.8 22.3 10 
Src rear cess 18.0 22.5 11 4.8 24.2 10 
ss Sale Se a eae Nia eS 10.1 25.1 10 a2 20.5 11 
Mo ce Soe ee ee 10.0 16.5 12 Bay 16.5 12 
ESET OS EC os PERE 9.5 18.1 10 3.9 18.5 10 
_ SO SuE SE 2 sae as Seip tae aa ee NC 8.5 17.0 li 4.1 19.1 11 
Wee typo ocr ereday cosets sean 6.5 19.5 19 4.6 25,3 il 
RE ee ae 9.8 13.1 10 3.4 20.1 10 
2 FA ties Ge Mee ea Lae eater MRS A 10.2 20.5 10 4.8 26.5 il 
| ete tre Soba ee tte ecg 10.2 19.1 11.3 4,2 22.0 10.8 
' Beene 
Tables 20, 21, and 22 contain the results of the dry weight 
and ash determinations; Table 23, the amounts of dry weight 
and ash per 100 cubic centimeters of water transpired. 
DISCUSSION OF RESULTS 
Transpiration.—From Tables. 13 and 19 it can be seen that 
in both types of experiments, humid-dry and shaded-unshaded, 
the desired differences in conditions of relative humidity and sun- 
light were obtained to give a difference in the relative rates of 
transpiration. 
