644 The Philippine Journal of Science 1922 
TABLE 3.—Temperature and humidity readings on July 27, 1917. 
ee ea gn 
| | Humid room. Dry room. | 
No. Time. | SSS See Rea } Weather. 
| I. | Relative /Tempera-| Relative Tempera- 
|humidity. ture. jhumidity.) ture. 
a | rc. Weare pal EN fe RN See eat 
a.m. p.m. Per cent, °C. | Percent. sc Of 
RS RRAS Lo eRe Reee  ciece r 8.30 j 82 | 23.1 78 23.7 | Cloudy. 
RR ee | 9.80 7% | 26.9| 64 28.0 | Sunny. 
» DEO Saami Ee ergo 10.30 56 30.0 42 33.0 | Bright, sunny. 
WES ay Es Aptana 11.30 50 31.0 40.5 34.4 Do. 
[RSS cong ae eee a 12.30 49 31.9 40 35.0 Do. 
1 SERRE 2 2th ga ea a 1,30 51 31.5 44 34,0 Do. 
y a Se ee 2.30 54 32.0 46 84,2 Do. 
Wiist ee htacwec oc aa 3.30 54 32.0 48 33.5 Do. 
SEL ea ee 4.30 61 30.5} 56 31.1 | Cloudy. 
2 SOR oe Veteran 5.30 71 | 31.0 66 31.4 Sunny. 
Analyses.—Dry weight determinations were made by drying 
the samples or the whole material to constant weight in an 
electric oven at temperatures between 105 and 110° C. To get 
the ash, the dried material was burned in porcelain crucibles in 
an electric furnace, also to constant weight. Except when other- 
wise stated, each plant was analyzed separately, and analyzed 
for ash content in root, stem, and leaves. 
RESULTS OF EXPERIMENTS 
CROP I 
Seeds germinated, May 13, 1917. 
Seedlings transferred to culture solutions, May 17, 1917. - 
Plants placed in dry and humid chambers, June 13, 1917. 
Solutions changed, June 29, July 16, July 29, and August 13, 1917. 
HARVEST I, JULY 25, 1917 
The heights of all the plants on the day of the first harvest 
are given in Table 4. 
TABLE 4.—Heights of plants on the day of the first harvest. 
Plant No. | Humid 
| em. em, 
Po er oy 61 O08 
Sa BNE oe a RI pe NRL ge pA ec ac ps GREE ek iw uae 7 ee ae > EE ue Ree a Cs aeRO | 19.7 19.5 
We ha SS aie ee ee ete Bag a 20.0 18.9 
i ee a eee ee ene ee ee a | 17.7 16.8 
Be ee ee ee ee 16.2 12.0 
re eS ee ee eee yd cies 
i SS ee ! 4.3 14.0 
REN RSIS ce ye eae et SRS ee oe aee eam ne ee eae 10.0 11.5 
i ee ee ei er ee 4.5 12.0 
— pee re ee ove ges Ss etben  aee e S 13.9 15.8 
