INDEX 



325 



Methylene, 86 



blue, 33 

 Micro-organisms, 14, 16, 19, 21 ; 



comparison with enzymes, 117 ; 



isolation of enzyme from, 136 ; 



secretion of enzyme by, 122-124 

 Microbe, 13 



Micrococcus ureae, 136, 214 

 Micros pira estuarii, 241 

 Milk, 95, 145, 149, 178; chemical 



constituents of, 274 

 sugar (see Lactose) 

 Millon's reagent, 105, 184 

 Minkman, 231 

 Mitscherlich, 75, 136 

 Moist chamber, 32 

 Molasses, 95 

 Molecular formula, 41 



weight, 11 



Molecules, 36, 37, 38, 40 

 Mono-amino acids, 194 

 Mono-saccharoses, 83, 84 

 Monochlorbenzene, 48, 60 

 Moulds, 16, 17, 18, 19, 33, 34, 162 ; 



examination of, 33 

 Mucins, 209 

 Mucorineae, 19 

 Mucus, 209 

 J/unro, 219 

 Musculus, 136, 215 

 Mushrooms, 175, 176 

 Mycelia, 18, 34 

 Mycoderma aceti, 149 

 Myosin, 208 



NAPHTHALENE, 51 



Nascent state, 39 



Nasturtium leaves, 124, 268 



Nessler's reagent, 218 



Nicol prism, 70, 109 



Nicotine, 255 



Nitrates, Stoddart test, 218 



Nitric acid, 87, 105 

 organism, 220, 221 



Nitrification, 217-228 



Nitrites, test for, 218 



Nitrogen, 14, 20, 23, 59, 82 ; assimi- 

 lation of, 232; cycle, 212-235; 

 groups containing, 56 ; in soil, 

 259-260 



Nitroso-coccus, 221 



Nitroso-indol, 196 



Nitroso-monas, 221 

 Nitrous organism, 220, 221 

 Nucleo-proteids, 209 



OATS, 163 



Octadecapeptide, 202 



Oidaceae, 19 



Oil immersion lens, 30 



Olefine hydrocarbons, 48, 51 



Omelianski, 163, 167, 285 



Optical activity, 97, 107, 108, 124, 



125 



Ordinary ray, 69 

 Ormerod, 172. See Armstrong 

 Ornithin, 190 



Osazone, 88, 113, 129, 160 

 Osmotic pressure, 11, 12, 44 

 0' Sullivan and Tompson, 127 

 Oxidases, 40, 175, 249, 251, 253, 



255 



Oxidation, 40 

 Oximes, 57 

 Oxiurushic acid, 176 

 Oxycelluloses, 160 

 Ozone, 39 



PALM, 1 



Pancreatic extract, 124, 170, 171 



Paraffin, 118, 119 



Paraffin hydrocarbons, 47, 51 



Pasteur, on acetic acid fermenta- 

 tion, 149 ; on conversion of 

 urea into ammonia, 214; on 

 dilution method of culture, 20; 

 on oxidation of ammonia, 217; 

 on production of optically active 

 compounds, 270 ; on spontaneous 

 generation, 134-135 



Pasteurisation, 276 



Pathogenic organisms, 19, 123 



Pay en, 136 



Peaches, 96 



Pear, 151 



Peat, 167 



Pectase, 161, 179 



Pectic acid, 161 



Pectin, 161, 168, 179 



Pectose, 161, 162 



bodies, decomposition of, 167 



Penicilliaceae, 19 



Penicillium glaucum, 278 



