12 CONTENTS AND ANALYSIS OF SUBJECTS. 



CHAPTER Xin. — EFFLORESCENCE. — 102. 



285, Definition. 2S6, Position, — a, exceptions. 2S7, Peduncle — flower sessile. 

 288, Peduncle simple — branched — Pedicel. 2S9, Scape. 290, Rachis. 291, Inflo- 

 rescence solitary, — 292, centrifugal — centripetal, resulting from -what. 293, Cen- 

 tripetal, — 294, ' centrifugal, — a, how indicated — all the" flowers terminal, why. 

 295, Both modes combined — examples. 296, Varieties of centripetal inflorescence. 

 297, Spike — 29S, Raceme — 299, Ament — 300, Spadix — 301, Corymb — 302, 

 Umbel — 303, Head — a, of the Composit je — compound flowers — 304, Panicle — 305, 

 Thyrse — o. Compound umbel — Umbellet — Compound raceme, &c. 306, Varie- 

 ties of centrifugal inflorescence, — 307, Cyme — a, its noi-mal structure and devel- 

 opment — b, inference, — 308, Fascicle — 309, Verticillaster. — a. Peduncle con- 

 verted into a tendril. 



CHAPTER XIV. — PRE^CIPLES 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 

 products — composition. 327, Sugar — Diastase. 328, ilutual transformations. 

 329, Secretions. 



CHAPTER XV. - SYSTEMATIC BOTANY. — 111. 



§ OF THE CLASSIFICATION OF PLANTS. 



3.30, 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. 33S, Value of the natural — 

 obscurities now removed. 339, Remaining difficulties — artificial method how and 

 why retained in this Avork. 340, Artificial arrangement consists of. 



CHAPTER XVI. — § OF THE NATURAL SYSTEM. — 113. 



341, Its aim, — 312, distinguished from the Artificial — what characters em- 

 ployed, — 343, advantages. — 344, yet to be fully consummated — some artificial 

 characters yet necessary. 34-5, The first two grand divisions — Phoenogamia — its 

 characters, — Cryptogamia — characters, — 346, uncertainty of these characters, — 

 approximation o'f groups. 347, Sporogens. 348, Subdivision of Phsenogamia — 

 Exogens — characters — Endogens — characters. 349, Classes, six — Exogens 

 divided into two — Angiosperms — characters — Gymosperms — characters. 350, 

 Endogens divided into two — Aglumaceous, characters — Glumaceous, characters. 

 351, Crvplogamia divided into two — Acrogens, characters — Thallogens, charac- 

 ters. 3a2, Affinities of the classes. 354, Sub-classes — Polypetalae, characters — 

 Monopetalse, characters — Apetalae, characters. 355, Orders — 356, how formed. 

 357, Alliances, groups, &c. 358, Extent of the orders. 359, Summary. 



CHAPTER XVIL — § 1. NOMENCLATURE, &c.— 118. 



360, Names of the orders Latin adjectives — derivation, — a, exceptions. 361, 

 Etymology of generic names. 362, Of specific names, — 363, derivation — rules. 

 4 2. BoTAMC Analysis. 364, defined, — 365, proper state of plants for, — 366, im- 

 portance of. 367, Process, — 3(58, with the learner. — Analytical tables. § 3. Col- 

 lecting AND Preskrving Plants. 369, Importance of, — a, hortus^siccus. 370, 

 Apparatus. 371, Directions for gathering, — 372, pressing, — 373, changing. 

 374, An-angement of the specimens. 375, Genera arranged — how preserved. 

 376, Fruit, seed, and wood, how preserved. 



