336 BOTANICAL GAZETTE [NOVEMBER 
sunny places, 34 (12 per cent.) in wet shady places. Dry situ- 
ations, therefore, result in more color than wet ones; sunny situ- 
ations in more than those that are shady; dry and sunny have 
far the most of all; and wet shady the least of all. 
Of 211 stems 120 (56.8 per cent.) showed red in dry sunny 
places, 44 (20.8 per cent.) in dry shady places, 31 (14.7 per cent.) 
in wet sunny places; 16 (7.6 per cent.) in wet shady places. 
Of 140 petioles 70 (50 per cent.) showed red in dry sunny 
places, 31 (22.1 per cent.) in dry shady places, 22 (15.8 per cent.) 
in wet shady places, 17 (12.1 per cent.) in wet sunny places. 
Of 65 veims 31 (47.7 per cent.) showed red in dry sunny 
places, 14 (21.5 per cent.) in dry shady places, 12 (18.5 per 
cent.) in wet sunny places, 8 (12.3 per cent.) in wet shady places. 
Of 99 deaves (mesophyll) 48 (48.4 per cent.) showed red in 
dry sunny places, Ig (19.1 per cent.) in dry shady places, 18 
(18.1 per cent.) in wet shady places, 14 (14.1 per cent.) in 
wet sunny places. 
The proportion of red in the parts of the plant is about the 
same for the plant itself; greater number of cases in dry places 
than in wet; in dry sunny places the largest percentage of all. 
Dry shady and wet shady places showed about the same number 
of cases. 
An interesting confirmation of these percentages is found in 
reckoning them theoretically. For example, if 21.4 per cent. of 
the 285 plants were found growing in dry shady places, out of 
the 211 specimens showing red on the stem 45 should show it 
in dry shady places; and 4o did show it. 
In dry shady places the numbers expected and attained were 
as follows: stems 45-44; petioles 30-31; veins 13-14; leaves 
(mesophyll) 21-19. 
In dry sunny places the numbers expected and attained were 
as follows: stems I1I-120; petioles 73-70; veins 33-31; leaves 
(mesophyll) 52—48. 
In wet shady places the numbers expected and attained were 
as follows: stems 21-16; petioles 17-22; veins 7-8; leaves 
(mesophyll) 13-18. 
eae 
