10 CONTENTS. 



Put 



Of vegetable acids 131 



Of the vegetable alkalies 131 



Of fatty substances 134 



Of essential oils • 141 



Of resin 142 



Caoutchouc 143 



Vegetable wax 143 



Chlorophylle 145 



Of coloring matters 145 



( ilL — Composition of the different parts of plants 154 



Roots and tubers 154 



Barks 161 



Leaves 164 



Seeds 168 



Fleshy or pulpy fruits 189 



CHAPTER III. 



Or THX SACCHARINE rRUITS, JUICES, AND INrUSIONS USED IN THE PREPARATION 



or FERKENTED AND SPIRITUODS LIQUORS •• • 193 



CHAPTER IV. 



Or SOILS 200 



Classification of soils 223 



CHAPTER V. 



Or MANURES 237 



Excretions of the horse 267 



Excretions of the cow 268 



Excretions of the pig 268 



Animal excrements 285 



Table of the comparative value of manures, deduced frjm analyses made 

 by Messrs. Payen and Boussingault • 297 



CHAPTER VI. 



Or MINERAL MANURES OR STIMULANTS • 303 



Calcareous manures 303 



Of alkaline salts 316 



Growth of sainfoin upon soils gypsed and ungypsed in 1792, 1793, and 1794. 321 



Comparative growths of white clover, g>'psed and ungypsed, by Mr. Smith. 322 

 Experinjent with field-beet or mangel-wurzel, opening ine rotation with 



manured soil, 1842 327 



Mineral substances contained in the crop 32C 



Of ammoniacal salts 33i. 



Of water 336 



CHAPTER VII. 



Ur THE ROTATION or CROPS 341 



( I.— Of the organic matter of mauOre and of crops 341 



Potatoes 348 



Wheat 349 



Wheat-straw 349 



Red clover 349 



Turnips 350 



Oats 350 



Oat-straw 351 



Field -beet or mangel-wurzel 351 



Rye 351 



Rye-straw 351 



White peas 358 



Feastraw - • 35t 



