220 BOTANICAL GAZETTE [MARCH 
TABLE VIII 
WASHINGTON SEEDS, COLLECTED 1915, GROUND WITH SAND SIX WEEKS 
Qo at certain percentage germination* 
Temperature : 
interval (° C.) 
: Bae) 20 30 40 5° 60 70 
10/3-28 Ai. ay 2.28 2.10 BOS OVE, PC Saal oe Swabs oO Le ee 
Pelee 1.45 130 1 Gir, ieee Bemryrer ar otc el Weer Prieto PAM amceaiic Pane cecr 
OC 2st 0 2.62 2.80 2.55 2.67 2.34 2.20. iter 
21 Ouee ce 2.38 2.07 2.25 2.21 e329 OO |e tae 
1637707805 4 2.48 2.3 2.37) #38 2.35 2.47 2.65 
Brae Sa pee ee O.715 Os 5700 fe aes Lew ee ela oe Se ele ees 
* No germination at 8°-10° after 168 hours, and temperatures between this and 16.3° not tried. 
TABLE IX tae 
WASHINGTON SEEDS, COLLECTED 1915, GROUND WITH SAND NINE WEEKS 
Qw at certain percentage germination* 
Temperature 
interval (° C.) 
10 15 20 22 3° 
16. 3-27 6.2 Ra ea as, Goes Pe ean atee 2.70 
00 2-99..9) 1.99 1.74 1.48 Fedde Seay eee 
Ps a eer io Gere ta ad RA MAganiact 1.65 79 OS. peaee creas 
10,4-90 6... os Ae A RS Ie Ot fed Ee ae Ne 2.95 
ar Bay are 2 ee Poe ls as PS as A ae 3.06 
* No germination at 8°-10° after 168 hours, and temperatures between this and 16.3° not tried. 
TABLE X 
INDIANA SEEDS, COLLECTED I914, UNTREATED 
Qw at certain percentage germination 
~ Temperature 
interval (°C.) 
12.5 15 20 30 40 50 60 
11.09 —14:45....| 12.82 9.60 E908 36,88 le ace leans 
T4.4572350-5 5, 3.92 4.37 4.56 4.62 WAT eile eee 
bas cee heen cles beebee ae) 1.54 t.55 55 1.42 
PU get © pee ey Ei nn © Fon nti yeni: 2.42 2,23 
