ANALYSIS OF SUBJECTS. il 
feather venation — 1, Orbicular —2, Elliptic—3, Oblong—4, Ovate —5, Lanceo- 
late —6, Obovate — 7, Spathulate —8, Cordate—9, Auriculate —10, Hastate —11, 
Sagittate — 12, Reniform — a, Forms dependent on the ea of the tissue — 
13, Runcinate —14, Lyrate —15, Pinnatifid—16, Sinuate. 3, Forms resulting 
from’ radiate venation — 17, Palmate — 18, Digitate——19, Pedate —20, Lacinate — 
21, Peltate— 22, Reniform, &c. 234, Forms of parallel-veined leaves — 23, Linear — 
24, Oval, &c. — 25, Cordate — 26, Acerose. 
§5. MARGIN. —90. 
F 235, How modified —1, Entire— 2, Dentate —3, Serrate—4, Crenate —5, Erose 
— 6, Undulate —7, Spinous —8, Incised —9, Laciniate — 10, Crisped —11, Repand. 
§6. APEX. 90. 
236, Termination of leaf—1, Acute—2, Obtuse—3, Acuminate—4, Emargin- 
ate —5, Retuse —6, Mucronate. 
67. SURFACE. —90. 
237, Terms descriptive of the epidermis on the leaf or elsewhere — 1, Glabrous — 
2, Pubescent — 3, Rough— 4, Pilose—5, Hoary—6, Villose—7, Woolly —8, To- 
mentose —9, Rugose — 10, Punctate. 
§8. COMPOUND BEAVES.—91. 
238, Leaf becomes compound on what principle. 239, Leafiets — articulated. 
240, Forms resulting from the feather-veined arrangement— 1, Pinnate — 2, Equall 
pinnate — unequally —cirrhose —3, interruptedly—4, Number of leaflets —tn- 
foliate — single —5, bipinnate—6, tripinnate—'7, biternate—8, triternate. 241, 
Forms resulting from radiate venation—9, Quinate—10, Septinate. 242, Leaf 
with regard to insertion—1, Amplexicaul—2, Perfoliate -—3, Decurrent —4, Con- 
nate. 243, Combined terms, — a, the preposition sz. 
§9. ASCIDIA, STIPULES, AND BRACTS. —93. 
244, Leaves of Teazel— Tillandsia— Arum. 245, Ascidia, —a, of the Sarracenia, 
how formed, &c.- 246, Nepenthes. 247, Dischidia. 248, Dionza. 249, Stipules, — 
varieties — positions. 250, Their nature. 251, Leaves stipulate —exstipulate — 
stipels. 252, Bracts, — 253, their nature. 254, Involucre — involucel, — 255, of the 
Composite. 256, Glume — awn — pale — valves. 
§10. DURATION. —96. 
257, Leaves temporary —1, Fugacious —2, Deciduous —3, Persistent. 258, Fall 
of the leaf— previous changes. 259, Cause of defoliation. 
§11. PHYSIOLOGICAL STRUCTURE. —96. 
260, Of the frame-work,— a, of the lamina. 261, Parenchyma disposed in two 
layers,—a, how covered. 262, Internal structure of the parenchyma. 263, Ar- 
rangement of the cells, —a, chlorophyll. 264, Stomata communicate with what— 
found on which surface. 265, Vessels of the latex—their course. 266, Leaf of 
Oleander — air cells. 
§12. OF THE FUNCTIONS OF LEAVES.—$93. 
_ 267, Enumerated—result— latex. 268, Crude sap consists of. 269, Exhala- 
tion — 270, distinguished from evaporation —271, takes place through the stoma- 
ta—occurs only in the light —why —g, illustration. a7, Exhalation dependent 
on absorption — quantity —illustration. 273, Absorption, —a, illustration. — 274, 
by their lower surface —illustration. 275, Respiration — 276, consists in —277, 
constant — the result — 278, illustration — 279, two periods of its greatest activity — 
@, In germination, — 4, flowering — proportion of oxygen evolved. — JVote, illustra- 
tion. — 280, Life of the plant dependent on. 281, ideation = "ill process. 282, 
Carbon — its sources, —a, illustration. — Plants blanched in the dark. 283, Fixation 
of carbon — relative amount absorbed and evolved. — Experiments of Dr. D: ubeny. 
284, Relation of animal to vegetable kingdom in regard to carbon — Reflections. 
9 aS 
