INDEX 
597 
All numbers refer to pages, heavy tyye indicating illustrations. 
sweet, 209; black nightshade, 
208; egg plant, 85; jimson-weed, 
200; red pepper, 131, 132; to- 
baccos, 184; tomato, 83, 84; 
white potato, 59, 60 
Nine-pins, 245 
Nitrocellulose, 228 
Nitrogen, 570; need of, 115 
Nitrogenous food, 114 
Node, 23, 317, 318 
Nomenclature, 314; binomial, 4 
Non-alcoholic beverages, 150 
Non-motile spores, 490 
Non-nitrogenous foods, 115 
Non-nutrients, 31 
Non-sexual, generation; 560; re- 
production, 480, 483, 512; spores, 
511 
Northern Fox-grape, 88, 93, 125 
Norway Spruce, 272, 551, 552, 553 
Nostoc, 522, 574 
Nostoc spp., Fallen Stars 
Nucellus, 551, 556 
Nucleus, 473 
Nurse-plants, 512, 548, 560 
Nursing by mosswort gameto- 
phyte, 531 
Nut, 374; drupaceous, 376 
Nutlets, 364 
Nutmeg, 128, 134, 177; oil of, 130, 
297 
- Nutmeg Family, 398: nutmeg, 134 
Nut-oils, 101, 296 
Nutrients, 31 
Nutrition, organs of, 321 
Nuts, 35 
Nux vomica, 188, 189, 190 
Nymphecee, Water-lily Family.. 
Oak, 294, 414, 415; cork, 277, 278; 
English, 258; red, 257 
Oaks, 374 
Oak wood, 256 
Oakum, 231 
Oars, 259 
Oats, 11, 12, 13, 14, 15, 25, 120, 
124, 126, 235, 387, 420, 421; 
kernel, 114; range, 27 
Ocrea, 372 
Ocreate stipules, 372 
Odors of flowers, 557 
(cology, 10 
(Enothera spp., Evening Primrose 
(Enotheracee, Evening Primrose 
Family 
Offensive odors caused by blue 
alge, 475 
Offspring, of two parents, 512; 
well-endowed, 510 
Oil finish, 296 
Oil, of almond, 167; of cacao, 167; 
of cloves, 129, 130; of mustard, 
173; of nutmeg, 130; of saffron, 
175; of turpentine, 288, 296; of 
wintergreen, 147 
Oil reservoirs, 360 
Oil-cloth, 230 
Oils, 222, 295; drying, 295; fixed, 
34, 128; non-drying, 297; vola- 
tile, 128 
Ointments, 288 
Old age, 571 
Oleacee, Olive Family 
Olea europea, Olive 
Oleander, 206, 207, 209 
Oleic acid, 296 
Olein, 296 
Oleoresins, 287 
Olive, 100, 105, 124, 167, 296; oil, 
101, 167, 296, 297; wood, 269 
Olive Family, 401: olive, 105; 
white ash, 259 
Once-compound, 339 
Onion, 43, 63, 64, 120, 124, 146, 
390, 424, 425; bulb, 114 
Ontogeny, 435, 560 
Oomycetes, Nater-mold Fungi 
Odspore, 484 
Open estivation, 371 
Ophioglossum vulgatum, 
tongue 
Opium, 182 
Opium Poppy, 182, 183, 296, 361 
Opposite, floral organs, 368; leaves, 
342, 352 
Opuntiales, Cactus Order 
Orange, 88, 97, 121, 124; pulp, 114; 
wood, 266 
Orange-flower oil, 297 
Orange-peel oil, 297 
Orchidacee, Orchid Family 
Orchidales, Orchid Order 
Orchideew, Orchids 
Orchid Family, 391, 397, 424, 425: 
Adder- 
