772 
Myrrh Family, 547 
Neighboring-cells, 251 
Neisseria gonorrhoea, 373 
intracellularis, 373 
Nepenthacea, 530 
Nepenthes, 241, 245, 634, 638 
bicalcarata, 637 
Edwardsiana, 637 
Nigella, 519 2 
Nightshade, Fig. of, 535 
Family, 533, re, 
Nitella, 40, 346 
Nitrification, 367 
Nitrifying bacteria, 182, 367 
_ Nitrobacter, 182 
INDEX 
Nitrogen cycle, 182 
Nitrogen fixation, 178 
Nitrosococcus, 182 
Nitrosomonas, 182 
Node, defined, 186 
Nomenclature, 329 
Binomial system of, 325 
Non-protoplasmic cell contents, 74 
Nostoc, 336 
Fig. of, 334 
Nucellus, 287, 448, 474 
Nuclear membrane, 19, 43 
Nuclear sap, 41 
Nuclei, assisting, 292 
polar, 292 
Nucleins, 93 
Nucleolus, 18, 41 
Nucleoplasm, 41 
Nucleus, 18, 41 
Numerical aperture, 666 
Nut, 304 
Nutgall, Fig. of, 505 
Nutlet, 302 
Nutmeg, 314 
Nutmeg Family, 515 
Nutrition, defined, 31 
