ANALYSIS OF SUBJECTS. 11 



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, Eeniform — a, Forms dependent on the development of the tissue — 

 13, Runcinate — 14, Lyrate — 15, Puinatifid — 16, Sinuate. 233, Forms resulting 

 from radiate venation — 17, Palmate — 18, Digitate — 19, Pedate — 20, Lacinate — 

 21, Peltate — 22, Eeniform, &c. 234, Forms of parallel-veined leaves — 23, Linear — 

 24, Oval, &c. — 25, Cordate — 26, Acerose. 



§5. MARGIN. — 90. 



235, How modified — 1, Entire — 2, Dentate — 3, Serrate — 4, Crenate — 5, Erose 

 — 6, Undulate — 7, Spinous — 8, Incised — 9, Laciniate — 10, Crisped — ll,Repand. 



§6. APEX. — 90. 



236, Termination of leaf — 1, Acute — 2, Obtuse — 3, Acuminate — 4, Emargin- 

 ate — 5, Retuse — 6, Mucronate. 



§7. SURFACE— 90. 



237, Terms descriptive of the epidennis 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 LEAVES. — 91. 



238, Leaf becomes compound on what principle. 239, Leaflets — articulated. 

 240, Forms resulting from the feather-veined arrangement — 1, Pinnate — 2, Equally 

 pinnate — unequally — cirrhose — 3, interruptedly — 4, Number of leaflets — tri- 

 foliate — single — 5, bipinnate — 6, tripinnate — 7, biternate — 8, tritemate. 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 sub. 



§9. ASCIDIA, STIPULES, AND BRACTS. — 93. 



244, Leaves of Teazel — Tillandsia — Anim. 245, Ascidia, — a, of the Sarracenia, 

 how formed, &c. 246, Nepenthes, 247, Dischidia. 248, Dionsea. 249, Stipules, — 

 varieties — positions. 250, Their nature. 251, Leaves stipulate — exstipulate — 

 stipels. 252, Bracts, — 25-3, their nature. 254, Involucre — involucel, — 255, of the 

 Compositac. 256, Glume — awn — palse — valves. 



§10. DURATION.— 96. 



257, Leaves temporary — 1, Fugacious — 2, Deciduous — 3, Pei-sistent. 258, Fall 

 of the leaf — previous changes. 2-59, Cause of defoliation. 



§11. PHYSIOLOGICAL STRUCTURE. — 96. 



260, Of the frame-work, — tr, of the lamina. 261, Parenchyma disposed in two 

 layers, — a, how covei-ed. 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.— 99. 



2C7, 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 — a, illustration. 272, Exhalation dependent 

 on ab.sorption — quantity — illustration. 273, Absorption, — a, illustration. — 274, 

 by their lower surface — illustration. 275, Respiration — 27(), consists in — 277, 

 constant — the result — 278, illustration — 279, two periods of its greatest activity — 

 a, in germination, — ^, flowering — proportion of oxygen evolved. — Note, illustra- 

 tion. — 2S0, Life of the plant dependent on. 281, Digestion — the process. 282, 

 Carbon — its sources, — cr, illustration. — Plants blanclicd in the dark. 283, Fixation 

 of carbon — relative amount absorbed and evolved. — Experiments of Dr. Daubeny. 

 28-1, Relation of animal to vegetable kingdom in regard to carbon — Reflections. 



