ECOLOGY OF WOODLAND PLANTS. 405 
Fig. 12. Geological map of the area indicated in fig. 10: p. 364. 
13. T. S.* of a pinnule of Pteris aquilina from a plant growing under 
xerophytic conditions on the Gritstone Plateau : p. 970. 
14. T. S. pinnule from a plant growing in the medium shade of an 
Oak wood: p. 370. 
15. T. S. pinnule from a plant growing under the shade of Sycamore 
p. 370. 
16. T. S. pinnule from a plant growing under the deep shade of 
Beech: p. 370. 
17. T. S. leaf-stalk from exposed situation of Gritstone Plateau: 
p. 973. 
18. T. S. portion of same ; x 150 diam. : p. 373. 
19. T. S. leaf-stalk, Oak-wood form : p. 372. 
20. T. S. portion of same; x 150 diam. : p. 373. 
21. T. S. leaf-stalk from a very large frond from moist Oak wood: 
p. 372. 
22. Portion of 21; x 150 diam. : p. 373. 
23. T. S. lenf-stalk of an immature shade-form : p. 372. 
24. T. S. portion of 23; x 150 diam.: p. 373. 
25. T. S. leaf-stalk, mature shade-form : p. 372. 
26. T. S. portion of 25; x 150 diam.: p. 373. 
27. T. S. slender leaf-stalk, Oak-wood form: p. 372. 
28. T. S. portion of 27; x 150 diam.: p. 373. 
29. T. S. rhizome of a plant growing under shade of Beech : p. 378. 
T. S. portion of 29; x 150 diam. : p. 378. 
31. T. S. rhizome of a plant growing in an exposed dry sandy soil : 
p. 378. 
S. portion of 31; x 150 diam.: p. 378. 
. S. typical leaf of Scilla festalis : p. 380. 
S. portion of 33; x 150 diam.: p. 380. 
S. leaf of Scilla growing under shade of Beech ; p. 350. 
S. portion of 35 ; x 150 diam. : p. 380. 
e 
MESI 
eee 
36. T 
T. S. leaf of Scilla growing in a sunny situation ; p. 380. 
38. T. S. portion of 87; x 150 diam.: p. 380. 
T. S. portion of ditto showing formation of hypodermis: p. 380. 
T. S. much thickened cells of midrib of 38: p. 380. 
4l. Portion of leaf-base of Scilla, showing position of abciss-layer : 
p. 381. 
42. L.S. of 41 passing through abciss-layer : p. 381. 
43. A, B, C. Three elongated bulbs of Scilla, March 2nd : p. 382. 
D, E, F. The same bulbs as they appeared on April 11th. 
G, H, I. Ditto on April 26th, 
* T.S. = transverse section; L.S. = longitudinal section. 
LINN. JOURN.— BOTANY, VOL. XXXVII. 26 
