12 CONTENTS AND ANALYSIS OF SUBJECTS. 



CHAPTER XIII INFLORESCENCE. 102. 



285, Definition. 286, Position, .#, 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. Cen 

 tripetal, 294, centrifugal, #, 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 301, Corymb 302, 

 Umbel 303, Head a. of the Composite compound flowers 304, Panicle 305, 

 Thyrse a y Compound umbel Umbellet Compound raceme, &c. 306, Varie- 

 ties of centrifugal inflorescence,- 307, Cyme a, its normal structure and devel 

 opment , 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 

 products composition. 327, Sugar Diastase. 328, Mutual transformations. 

 329, Secretions. 



CHAPTER XV. - SYSTEMATIC BOTANY. 111. 



OF THE CLASSIFICATION OP 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. 113. 



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 Phjenogamia its 

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

 approximation of groups. 347, Sporogens. 348, Subdivision of Phaenogamia 

 txogens characters Endogens characters. 349, Classes, six Exogens 

 divided into two Angiosperms characters Gymosperms characters. 350, 

 Endogens divided into two Aglumaceous, characters Glumaceous, characters. 

 351, Cryptogamia divided into two Acrogens, characters Thallogens, charac 

 ters. 352, Affinities of the classes. 354, Sub-classes Polypetalse, characters 

 Monopetalae, characters Apetalse, 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. 

 2. BOTANIC ANALYSIS. 364, defined, 365, proper state of plants for, 366, im- 

 portance of. 367, Process, 368, with the learner. Analytical tables. 3. COL 

 LECTING AND PRESERVING PLANTS. 369, Importance of, a, hortus siccus. 370, 

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

 J74, Arrangement of the specimens. 375, Genera arranged how preserved. 

 J76, Fruit, seed, and wood, how preserved. 



