404 



INDEX 



Nitrogen, oxids of .............. 90 



preparation ....... 42-43 



properties ............ 44 



role in plant and ani- 

 mal life ............ 45 



Nitrogenous compounds. ..214-235 

 matter, animal bodies 



Non-nitrogenous compounds, food 

 value ....................... 213 



Non-nitrogenous compounds, gen- 

 eral relationship ............ 212 



Note-book, laboratory .......... 27 



Nuclein ...................... 226 



Nutrients, digestible, of foods.. 341 

 Nutrition ................. 325-366 



Nutritive ratio ................ 357 



Oat feed ...................... 308 



hay ...................... 265 



Oats, composition of .......... 296 



as food .................. 297 



grading of ............ 300 



structure of kernel ....... 296 



Olein ............... .......... 200 



Olives ....................... 316 



Oranges ........... . .......... 314 



Organic compounds in plants.. 117 

 matter ................ 1 75 



decay of ........ 118 



production of ... 245 

 Osmosis ...................... 241 



Oxidation ..................... 35 



Oxids ......................... 34 



Oxygen .................... 31-37 



importance ............ 35 



occurrence ............ 31 



preparation ............ 31 



properties ............. 34 



Ozone ......................... 70 



Palmitin ................. ..... 199 



Paris green ................... 153 



Parsnips ..................... 313 



Pectin bodies ................. 196 



Pentpsans 195 



Peptic ferments 322, 333 



Peptones 221 



Petroleum 109 



Phosphates 94 



fertilizers 94 



in human foods 389 



Phosphoric acid 94 



Phosphorus 93 



compounds 95 



importance 95 



oxids 93 



in plants 169 



properties 93 



Physical change 2 



properties defined . ..8-18 



Physics 2 



Pigs (see swine). 



Plant ash 155-174 



growth 235-246 



juices, movement of 240 



life, chemical change 2 



physical change 2 



Plaster of Paris 1 36 



Plumbing 29 



Polariscope 193 



Porcelain 147 



Potassium 127 



carbonate 129 



chlorate 129 



compounds 127-130 



hydroxid 127 



nitrate 1 28 



in plants 164 



sulfate 129 



Potatoes 312 



Pottery 147 



Prairie hay 265 



Properties, chemical 9-10 



of elements and com- 

 pounds 8-18 



physical 8-9 



Proportion, law of definite 15 



Protein, crude 224 



Proteids 215 



