12 CONTENTS AND ANALYSIS OF SUBJECTS. 
CHAPTER XIII.— INFLORESCENCE. — 102. 
285, Definition. 286, Position, —a@, exceptions. 287, Peduncle— flower sessile. 
288, Peduncle simple — branched —Pedicel. 289, Scape. 290, Rachis. 291, Inflo 
rescence solitary, — 292, centrifugal — centripetal, resulting from what. 293, en 
tripetal, 294, centrifugal,—a, how indicated—all the flowers terminal, why. 
295, Both modes combined — examples. 296, Varieties of centripetal inflorescence. 
297, Spike— 298, Raceme — 299, Ament—300, Spadix—301t, Corymb—302, 
Umbel—303, Head — a, of the Composites — compound flowers — 304, Panicle — 305, 
Thyrse —a, Compound umbel— Umbellet — Compound raceme, &c. 306, Varie- 
ties of centrifugal inflorescence, — 307, Cyme —a, its normal structure and devel 
opment — 4, inference,—308, Fascicle—309, Verticillaster.—a, Peduncle con 
verted into a tendril. 
CHAPTER XIV.— PRINCIPLES OF NUTRITION. — 106. 
310, Four simple organic elements — their proportion. 311, Carbon. 312, Mineral 
ingredients — Agricultural Chemistry. 313, Sources of the simple elements. 
314, Air. 315, Soil. 316, Water. 317, Ammonia. 318, Air plants, —three con- 
ditions requisite. 319, Irrigation — Draining. 320, Tillage — Amendments. 
321, Fallow ground — Rotation of crops. 322, Light and Heat. 323, Digestion, &c. 
324, Proper juice. 325, Products first developed. 326, Three general nutritive 
ee Potion. 327, Sugar — Diastase. 328, Mutual transformations. 
29, Secretions. 
CHAPTER XV.— SYSTEMATIC BOTANY.—111. 
§ OF THE CLASSIFICATION OF PLANTS. 
330, Systematic Botany defined. 331, Remarks on the extent of the field of 
botanic research. 332, Folly of studying individuals only. 333, Individuals grouped 
into species, —a, illustrations — clover — pine. 334, Species grouped into genera,— 
illustration. 335, Genera resolved into orders and classes. 336, Two methods of 
classifying the genera, — artificial ~ its basis, — natural—its basis. — 337, Com- 
parative merits of the two— use of the artificial. 338, Value of the natural — 
obscurities now removed. 339, Remaining difficulties — artificial method how and 
why retained in this work. 340, Artificial arrangement consists of. 
CHAPTER XVI.—§ OF THE NATURAL SYSTEM. —II3. 
341, Its aim, — 342, distinguished from the Artificial — what characters em- 
ployed, — 343, advantages, — 344, yet to be fully consummated — some artificial 
characters yet necessary. 345, The first two grand divisions — Pheenogamia — its 
characters, — Cryptogamia —characters, — 346, uncertainty of these characters, — 
approximation of groups. 347, Sporogens. 348, Subdivision of Phzenogamia— 
xogens — characters — Endogens — characters. 349, Classes, six — Exogens 
divided into two— Angiosperms — characters — Gymosperms — characters. 390, 
Endogens divided into two — Aglumaceous, characters — Glumaeceous, characters. 
351, togamia divided into two— Acrogens, characters — Thallogens, charac- 
ters. 35), Affinities of the classes. 354, Sub-classes— Polypetale, characters — 
Monopetale, characters— Apetale, characters. 355, Orders — 356, how formed. 
357, Alliances, groups, &c. 358, Extent of the orders. 359, Summary. 
CHAPTER XVII. —§ 1. NOMENCLATURE, &c.—118. 
360, Names of the orders Latin adjectives — derivation, — @, exceptions. 361, 
Et ology of generic names. 362, OF specific names, — 363, derivation — rules. 
. Botanic ANALYsIs. 364, defined, — 365, proper state of plants for, — 366, im- 
portance of. 367, Process, — 368, with the learner. — Analytical tables. § 3. Cor- 
LECTING AND PRESERVING PLants. 369, Importance of, — 4, hortus siceus. 370, 
Apparatus. 371, Directions for gathering, — 372, pressing, — 373, vines: 
874, Arrangement of the specimens. 375, Genera arranged — how preserved. 
376, Fruit, seed, and wood, how preserved. 
ee 
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