414 



HOW GK0P8 GROW. 



Nutrient matters In plant, Mo- 

 tion of 401 



Nutrition of seedling, . . . .367 



Nutrition of plant 366 



Oat plant. Composition and 



growth of 223 



Oats, weight per hushel, . . .176 



Oil in seeds, etc., 83 



Oil of vitriol 26,130 



Oils, Properties .of ...'.. 83 



Oleic acid, 86 



Oleln 85 



Orders 328 



Organic matter 12 



Organism, Organs 243 



Osmose, 393 



Osmose, mechanical effects on 



plant 406 



Osmometer, 394 



Ovaries, 318 



Ovules, 318 



Oxalates 78, 149 



Oxalic acid 78 



Oxides, 19, 20 



Oxides of iron, described, . 19, 141 

 Oxides of manganese, described 142 



Oxyfatty acids, 77 



Oxygen, Properties of .... 16 

 Oxygen occurrence in teh, . .128 

 Oxygen in Assimilation, . . . 364 

 Oxygen in Germination, . . .353 



Palmitic acid 86 



Palmltin 85 



Papain, 104 



Parenchyma, . , 255 



PapUionaoeous plants, ... 330 



Pappus 331 



Fararabin, 59 



Paraglobulin, 96, 99 



Paragalactin, 61 



Feotio acid, 74 



Pectin bodies, 58, 59, 74 



Pectosic acid 74 



Pectose 58, 61, 74 



Pedigree wheat 158, 344 



Pepsm 104 



Peptones, 100 



Permeability of cells 253 



Petals, 318 



Plianerogams, Pliaenogams,316, 329 



Pliloridzm 69 



Phosphate of lime, 148 



Phosphate of soda, 148 



Phosphate of potash 147 



Phosphates, 28, 132, 147 



Phosphates function in plants, 211 

 Phosphates relation to albu- 

 minoids, 221 



Phosphoric acid, 27, 132 



Phosphorite, 148 



Phosphorlzed substances, . . 122 



Phosphorus, 27 



Phosphorus pentoxide, . . 27, 132 



Physics, 10 



Physiology, 10 



Piperln 121 



Pistils, . ., 318 



Pith, ■ 297 



Pith rays ~ .... 299 



Plastic Elements of Nutrition, 109 



Plumule, 333 



Pollarding, 286 



Pollen 318 



Polygonum convolvulus. Fertil- 

 ization of. Fig., .... .295 



Pome, 331 



Porosity of vegetable tissues, .385 

 Potato leaf, Pores of. Fig., . . 309 

 Potato stem, Section of, Tig., .304 

 Potato tuber. Structure and Sec- 

 tion of. Fig. 300 



Potash 138, 144 



Potash lye 139 



Potassium, ' . 138, 211 



Pdtassium carbonate, . . . .144 



Potassium Chloride, 149 



Potassium hydroxide, . . . .139 



Potassium, oxide 138 



Potassium phosphate, ... . .147 

 Potassium silicate, ...... 134 



Potassium sulphate 146 



Prosenchyma 255 



Protagon, 123 



Proteoses, lOO 



Protoplasm, . 245 



Protein bodies, or Proteids, . . 87 



Proximate Principles 37 



Quack grass 287 



Quantitative relations among 

 ingredients of plant, ... 220 



Quartz, 134 



Quince seed mucilage, .... 62 

 Radicle, . ... . . . . . .333 



BafElnoSe 68 



Reproductive Organs, . . 243, 315 



Rhizome, 287 



Rind, 297 



Rock Crystal, 134 



Root-action, imitated 400 



Root-action, Osmose in . . . 399 



Root cap, • . - .257 



Root distinguished from stem, 258 



Root excretions, 280 



Root hairs, 265 



Root, Seat of absorptive force 



in, 270, 399 



Root stock, 287 



Rootlets, 260 



Roots, Growth of 256 



Roots contact with soil, . . . 266 

 Boots going down for water, . .276 

 Roots, Search of food by . .263 



Roots, Quantity of 263 



Rubidium action on oat, ... 209 



Runners, , . 286 



Saccharose, 60 



Saccharose, Amount of, in 



plants, . 66 



Sago, '51 



Salicln 69 



Sallcomia, 191 



Sal-soda 145 



Salsola, 191 



Salts, Definition of 81 



Salts, in ash of plants, . . .143 

 Saltwort 191 



