GENERAL INDEX. 



597 



Nutrition of Parasites, 183 

 Nutrition of Protoplasm, 180 

 Nutrition of Saprophytes, 182 

 Nux Vomica, 503 

 Nyctaginacese, 497 

 Nymphsea, 131,558 

 NympbEeaceaj, 128, 435, 557 

 Nyssa, 519 



Oak, 64, 147, 173, 384, 431. 436, 



479 

 Oak Family, 477 

 Oat, 56, 58, 59, 166, 316, 318, 333, 



333, 455 

 Oblong Leaves, 146 

 Ochnacese, 540 

 Ochroma, 547 

 Octandrous, 433 

 CBdogoniaceffi, 269, 271, 339 

 CEdogonieae, 246, 369, 336, 337 

 (Edogonium, 10, 33, 42, 51, 350 

 CEnothera, 11, 98, 418, 523 

 Oidium, 384 

 Oil, 63, 139 

 Oil-cake, 544 

 Oil of Caraway, 63 

 Oil of Juniper, 411 

 Oil of Lavender, 497 

 Oil of Lemons, 63 

 Oil of Peppermint, 497 

 Oil of Rhodium, 503 

 Oil of Thyme, 63 

 Oil of Turpentine, 63 

 Oily Matter, 179, 181 

 Okra, 547 

 Olaeales, 539 

 Olacineae, 540 

 Oldfieldia, 485 

 Olea, 103, 505 

 Oleace^, 504, 565 

 Oleander, 94, 504 

 Olearia, 516 

 Oleaster, 493 

 Olibanum, 540 

 Oligomeris, 553 

 Olive, 505 

 Olive Family, 504 

 Olive Oil, 63, 505 

 Omphalaria, 306, 309 

 OnagraceEB, 61, 533 

 Onion, 61, 63, 77, 93, 199, 333, 458 

 Onobrychus, 533 

 Onygeneae, 338 

 Onygenaceae, 339 



Oogonium, 343, 367 

 Oospore, 46, 56, 343, 368 

 Oophyta, 205, 343, 369, 335, 337, 



339, 568, 569, 570 

 Oosphere, 45, 343, 367 

 Opegrapha, 310 

 Opegraphei, 310 

 Open Bundle, 131, 443 

 Opening of Flowers, 199 

 Operculum, 355, 360 

 Ophioglossaceie, 371, 373, 379, 384. 



389 

 Ophio^lossum, 80, 380, 381 

 Ophrydeje, 470 

 Opium, 78, 556 

 Opium Poppy, 183, 556 

 Opposite Leaves, 149 

 Optimum Light,, 191 

 Optimum Temperature, 184 

 Opuutia, 150, 530 

 Orange, 130, 133, 541 

 Orang Lily, 460 

 Orchard Grass, 455 

 Orcliidales, 468 

 Orchidaceae, 469 

 Orchids, 137, 433, 469 

 Orchil, 308 

 Orchis, 470 

 Ordeal Poison, 504 

 Organic Acids, 180 

 Organic Compounds as Food, 176, 



178 

 Organogeny of the Flower, 436 

 Orobanclmceas, 500 

 OrobancLe, 56 

 Ornithngalum, 461 

 Ortbostichies, 149 

 Oryza, 455 

 Osage Orange, 490 

 Oscillatoria, 37, 67, 217 

 Oscillatoriaceae, 217, 338 

 Oscillatoriae, 53, 55 

 Osmunda, 81, 377 

 Osmundaceae, 377 

 Ostrya, 73, 477 

 Ourari, 508 

 Ovary, 391, 417, 418 

 Ovules, 136, 137, 390, 403, 419 

 Oxalic Acid, 64, 180, 183 

 Oxalis, 197, 435, 543 ' 

 Ox Eye Daisy, 514 

 Oxidation in Metastasis, 179 

 Oxidized Essences, 63 

 Oxygen, 175 



