INDEX 



Absorptive power of litter, 182 

 Acetylene evolved from cyanamide, 



Acidity of soil, 62, 258, 315 

 Adulteration of manures, 235 

 Agricultural Holdings Act, 354 

 Air a ccespitosa^ 256 

 Algerian phosphates, 1 18 

 Alkaline, reaction in soil, 55, 321 ; 



salts required by plant, 170, 262 

 Ammonia, absorbed by peat-moss 



litter, 183 ; conversion into 



nitrogen, tables for, 377 ; fixers 



of, 200 ; lost in dung-making, 



189 

 Ammonium carbonate from urea, 



184 

 Ammonium citrate as a solvent, 126, 



132, 143 

 Ammonium salts, 12 ; action on 



soil, 62 ; duration of, in soil, 96 ; 



in rain, 29 ; nitrification of, 60 ; 



versus nitrate of soda, 94 

 Ammonium sulphate, composition 



of, 58 ; in drainage water, 60 ; 



production of, 58 ; retention of, 



by soil, 61 

 Analysis of fertilisers, 349 

 Anhydrite, 160 



Antiseptics in dung-making, 202 

 Apatite, 104, 117, 121 

 Artificial manures, 24 

 Australia, value of superphosphate 



in, 140 

 Assimilation, 6, 14, 165 

 Availability, of manures, 91, 97, 145, 



156, 215 ; of plant food, 23, 282 

 Azotobacter chroococcum, 35, 257 



Bacteria, competing for nitro- 

 genous manures, 66 ; denitrif}'- 

 ing, 185 ; humus-forming, 186 ; 

 in soil, 257; nitrogen - fixing, 

 II, 32, 34, 273; putrefactive, 

 185 



378 



Bacterial changes in dung-making, 

 190 



Barley, Danish experiments on, 

 366 ; effect of phosphatic 

 manures, 137 ; effect of potassic 

 manures, 168 ; quality, effect of 

 salt on, 269 ; quality with nitro- 

 genous manures, 66, 81, 308 



Basic slag, 13, 106, 127, 143, 150; 

 composition of, 129 ; effect on 

 poor pastures, 329 



Basic superphosphate, 133, 152 



Bat guano, 236 



Beans, manures for, 322 



Beijerinck, 35 



Berkeland - Eyde, process for 

 nitrogen fixation, 43 



Bessemer process, 127 



Blithe, W., on manures, 11, 72, 107 



Blood, dried, 11, 239, 248 



Bone flour, 145 



Bone meal, 109, 145, 153 ; effect on 

 pastures, 331 



Bones, ii, 103, 106, 145 ; dissolved, 



"3, 155 

 Bonnet, oxygen evolved by leaves, 6 

 Boussingault, action of gypsum, 



267 ; theory of plant nutrition, 7 

 Bracken fern, as indicator of lack of 



lime, 254 ; as litter, 182 

 Bradley and Lovejoy, electrical 



fixation of nitrogen, 42 

 Rrown on assimilation, 14 



Cabbages, manures for, 316 

 Cake-fed dung, 203 ; cost of, 227 

 Calcium carbide, 38 

 Calcium carbonate, 250; removed 



from soil, 56, 62 

 Calcium cyanamide, 38 

 Calcium phosphates, 104, 142 

 Caliche, 46 

 Candolle, 293 

 Carbide, combination of nitrogen 



with calcium, 38 



