360 



INDEX 



Miscible oils, 290 



Moisture for soil bacteria, 145 



Molds in farm manure, 263 



Monocalcium phosphate in fertil- 

 izers, 223, 225, 227 

 in soils, 165 



Monosaccharides, 52 



Morphine, 97 



Movements of dissolved substances 

 in soil, 177 



Muriate of potash, a cause of soil 

 acidity, 244 

 as a fertilizer, 233 



Muscovite, 169 



Muscular tissue, 309 



Myosin, 309 



Myosinogen, 311 



Myrobalans, 103 



Myrosin in oil of mustard, 83 



Myrrh, 90 



N 



Naphtha, 301 

 Neatsfoot oil, 320 

 Neutral humus, 149 

 Nicol prism, 51 

 Nicotine, 98 



sulphate, as an insecticide, 291 

 Nitrate of soda, as a fertilizer, 206 

 Nitrate in tobacco waste, 238 

 Nitrates, formation of, in soil, 151 



in plants, 93 

 Nitrification, 151 

 Nitrites, formation of, in the soil, 



151 

 Nitrogen in air, 134 



amount added to soil by clover 

 and alfalfa, 157 

 in coal, 211 

 changes in farm manure, 261, et 



seq. 

 compounds in the air, 136 

 equal to ammonia, 279 

 fixation, 153 



non-symbiotic, 154 

 symbiotic, 154 

 function of, in plant, 44 

 importance of, in fertilizers, 205 

 loss of, in farm manure, 263 



prevention of, 264, 265 

 in soil, 162 

 Nitrogen-free extract, 109 



Nitrogenous extractives, 311 



fertilizers, 205 

 Nut galls, 103 



Oak bark for tanning, 102 

 Oat seed, discussion of composi- 

 tion, 117 

 Oil, 21 



of amber, 88 



of bitter almonds, 82 



of cinnamon, 82 



of cloves, 82 



function of, in plant, 37 



of lemon, 82 



manufacture of, by plant, 35 



of mustard, 83 



of onion, 83 



of peppermint, 83 



of roses, 84 



of sassafras, 84 



of thyme, 84 



transfer of, in plant, 37 



of turpentine, 86 



of wintergreen, 87 

 Oleic acid, 75 

 Olein, definition of, 75 

 Oleo oil, 348 

 Oleomargarine, 348 

 Oleo-resin, definition of, 88 

 Olibanum, 90 

 Olive oil, 77 

 Optical activity, 51 

 Organic acids in animal, 321 

 in plants, 99 

 in soil, 144, 164 



matter in arid soils, 188 



decomposition of, in soils, 143 

 factors affecting rate of, 

 144 

 in sand soils, 188 

 in soils, 140 



functions of, 149 

 loss of, 150 

 Orthoclase, 167 

 Ossein, 309 

 Otto of roses, 84 

 Oxalic acid, 100 

 Oxidases, 24 

 Oxygen, in air, 134 



consumed by burning coal, 134 



