218 BOTANICAL GAZETTE [MARCH 
TABLE II 
INDIANA SEEDS, COLLECTED 1915, GROUND WITH SAND NINE WEEKS 
Qs at certain percentage germination* 
Temperature 
interval (° C.) 
I2 14 20 30 36 40 50 60 70 80 
(8 ini Rc POOF Oa ss ea ee os ae eee 
rare BOAR Aas leas olen el ee [ee ial oe 
sols on 3 panna ee Te20, el a (ct Parga E530] 0.32| £136) TAs] gs 
Fe cee ge ts £5077) 2-64 Uo ee eee eee i 
16. te Bee te ase fer caste Ce eats seek 3,05) 355513. 42| 3.27) 9703) a -e0 
Seal a he ie ea et 1.27) 1 20| 1,27) 1, 20|.7 533} 2-32 
* 15 per cent germination at 810° in 156 hours. 
TABLE III 
INDIANA SEEDS, COLLECTED 1915, TREATED WITH H,SO, TWO MINUTES 
Qo at certain percentage germination 
‘Temperature 
interval (° C.) 
20 30 40 5° 60 7° 75 80 
(6terat-tr oe fd r9e8 | 2.908 FB OE Len Pcs peels os weep ce ea ee 
IE:Q c14:45.).¢.| 7348 | 6.16 5.29 6:07. ( TO:dé | 12:36 4 28.93 [vse ay 
TA. 45°23 402 5.000) amet 3.821 3.83 |) 3.060 1.2.90 1 2.74 ae 
234-330-423. I.999 | 1.89 1.95 1.89 1.96 1.87 1.05 1° 2:07 
$0:4 “Al. ies G4 1 1,74 45 | 3.32] 4.98 |. 2,97 | 2406 1 tae 
TA AS-28.0.4 5. < 2.81 2.92 Ds Be 2.420°) 2.18 | 1701s a 
20.0 —26.0.5... 53° | 4.89 1.88 1.94 467 EAGT cea os 1.903 
14 A5°30 4 oe, 2.65 [2.52 2574) 9.53 ) Ass 2 Oa le 
TABLE IV 
INDIANA SEEDS, COLLECTED I915, GROUND WITH SAND FOUR WEEKS 
Qryo at certain percentage germination 
_Temperature Eanes 
interval <3 
4 8 10 20 30 40 50 64 7o | 80 
(8 to 10)-23.9....... ASU 270 ele ee as ee 
16-9990 0 i ls eee soe ee 2.33] 2.50] 2.91 
23.0°36.4. 2.5.4.5, 1.61] 1.60] 1.90] 1.87] 1.91} 1.93] 1.86] 1.88) 1.84) 1.94 
O42 42 oe 1.28] 1.24) %.25| 1.43] 1,02] 1.10} 1.09 
oe to aes Cio Ry a> Bree PoCoga nn Ge em DETES) eget Bangeran Heer g TF 
BPE en, Rs 2.79| 1.93| 1-91] 1.83] 1.75]..---| 1-22] 1-65 
