Germination. of Forest Trees 41 
words, only 2 species had a higher germination per cent. in the 
open light than in the shade. 
On page 40 are given the germination curves of the two New 
Mexico species, Pinus ponderosa and Pseudotsuga taxifolia. 
While these do not show a higher germination per cent. in the 
dense shade than in the open light they show the characteristic 
rapid rise of the shade curves and the fact that germination begins 
earlier in the shade than in the light. 
TABLE III 
THE Errect oF Light oN GERMINATION 
Pacific Coast Species 
Open Light Medium Shade Dense Shade 
i : So |S n jm | 28 2a Suri eee 
89 | PA |z é B91 eA le 5 ZO | 2A |e E 
Pinus ponderosa (Calif.).......... 42 | 67 | 61.0, 22 | 92 | 62.0, 22 | 62 | 42.0 
UMUSJCH VENT: ton aes Ws eis eis aie || Ga | FAO)! 22 1) Bb | wALO) BOQ | 2b | yO 
Pinws lamber wands see ee sees ls ee FO || BO | BS) FO | BO |) Aol FO!) Be | 7 
AU USAGOULLEY DAME eee tome aeyaysne seer eee 52 | At |15-5| 54 | 30 | 18.0] 52 || 62 | 23-0 
AND LES ILE SNLIUGH ay en eerie ies 44 | 52 | 18.0) 24 | 54 | 30.0] 36 | 54 | 10.0 
WEA DOCCOLUSOCGULVEN SH MAA ee re BO | FB |) GO| 2a, |) 2B |) ALO} uO || Ga |) © 
Sequoia washingtoniana........... 106) i] 3683] 97 f0)] el O | SoS) al |) wal |) Sols 
LESUED (DUA Mass anvanacoccccs 66 % | Gil Oo (0) oO; oO (0) (0) 
PU GEOSTERC WSIS Scicliene.cSiaie a wi/oieie sieen,s 22 | 60 | 22.5] 18 | 64 | 34.0] r4 | 36 | 38.0 
LBS COGWAWOHS a5 6060565 5600009 4 (0) (0) Oe72 I | 0.5] 70 i |! @s5 
Pseudotsuga taxifolia (Wash.)...... 22) F280 16.0) 22) (2540 nse) EAG | 0252250 
Out of the 11 Pacific coast species listed in Table III, 7 germi- 
nated in the dense shade before they did in the open light culture, 
2 germinated simultaneously in the light and shade and 2 species 
did not germinate sufficiently to warrant conclusions. Pinus pon- 
derosa (Calif.) germinated 20 days earlier in the dense shade 
than in the light, Pinus jeffreyi 11 days, Abies magnifica 8 days, 
Libocedrus decurrens 13 days, Sequoia washingtomana 2 days, 
Picea sitkensis 8 days and Pseudotsuga taxifolia (Wash.) 8 days. 
Six species showed longer germination periods in the shade, 
three in the open light, and two species did not germinate sufficiently 
to be considered. Only one species, Pinus jeffreyt, showed a 
higher germination per cent. in the open light, two species showed 
