CONTENTS. 



vu 



Bulletin 164 — concluded. , pj^^^ 



Substitutes for milk in the rearing of dairy calves — concluded. 

 Results of experiments made at this station — concluded. 



Tabular summary of all trials, ....... 61 



Comments on the results, . . . . . . . .61 



How to feed the young calf, ....... 62 



The chemical composition of milk and calf meals, . . , .64 



The cost of rearing a dairy cow, ....... 66 



Food cost, ........... 66 



Other costs, ........... C6 



Initial value of heifer, ......... 69 



Concluding suggestions, . . . . . . . .71 



Bulletin 165. The effect of sulfate of ammonia on soil, . . ,73 



Introduction, ........... 73 



Soil used in the experiments, . ... . . . . .74 



Method of investigation, ......... 75 



Absorption of ammonia, ......... 75 



Absorption of dyes, .......... 76 



Calcium oxide removed, ......... 77 



Sodium and potassium removed, ....... 78 



Sulfuric acid removed, ......... 80 



Hj'drochloric acid removed, ........ SO 



Nitric acid removed, ......... 80 



Iron and aluminium removed, ........ 80 



Calcium absorption, ......... 82 



Analysis of drainage waters, ........ 84 



Culture studies, .......... 88 



Summary and conclusions, ........ 89 



Bulletin 166. Improved methods for fat analysis, ..... 91 



Introduction, ........... 91 



Classification — oils, fats and waxes, ....... 92 



Organoleptic tests, .......... 93 



Physical tests, .......... 94 



Synopsis of composition — oils and fats, ...... 94 



Fatty acids and glycerides, ........ 95 



Saponification (Koettstorfer) number, ...... 95 



Acid number, ........... 99 



Ether (Ester) number, ......... 101 



Calculated data from saponification, acid and ether numbers, . . 102 



Soluble fatty acids, .......... 106 



Reichert-Meissl number, ......... 109 



Neutralization number, . . . . . , . .112 



Volatile acids, . . . . . . . . . .113 



Polenske number, . . . . . . . . .113 



Insoluble fatty acids and unsaponifiable matter (Hehner number), . 114 



Neutralization number, . ' . . . . . . .117 



Lactones and anhydrides, ........ 120 



Iodine number, .......... 121 



Acetyl number, .......... 121 



Stearic acid, .......... 121 



Iodine number, .......... 123 



Calculated data from the iodine number, ..... 126 



Acetyl number, .......... 128 



Calculated data from the acetyl number, ..... 130 



Unsaponifiable matter, ......... 134 



Sterols, 138 



