Return ie 



Rohnd S. Bdiley 

 Kingston, Mass, 



INDEX 



Absorptive power of litter, i8a 

 Acetylene evolved from cyanamide, 



Acidity of soil, 62, 258, 315 



Adulteration of manures, 235 



Agricultural Holdings Act, 354 



Atra ctespitosa, 256 



Algerian phosphates, 1 18 



Alkaline, reaction in soil, 55, 321 ; 

 salts required by plant, 170, 262 



Ammonia, al.sorbed by peat-moss 

 liitcr, 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, 1 :6, 



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, 20a 

 Apatite, 104, 117, 1 21 

 Artificial manures, 24 

 Australia, value of superpho phate 



in, 140 

 Assimilation, 6, 14, 165 

 Availability, of manures, 91, 97, 145, 



156, 215 ; of plant food, 23, 282 

 Azoiobacttr chroococcum, 35, 257 



Bacteria, competing for nitro- 

 genous manures, 66 ; denitrify- 

 ing, 185 ; humus-forming, 186 ; 

 in soil, 257; nitrogen - fixing, 

 II, 32, 34, 273; putrefactive, 

 185 



378 



Hacterial changes in dung-making, 

 190 



Barley, Danish experiments on, 

 366 ; effect of phosphatic 

 manures, 1 37 ; 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, 3$ 



Berkeland - Kyde, process for 

 nitrogen fixation, 43 



Bessemer process, 127 



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



Blood, dried, 11, 239, 24S 



Bone flour, 145 



Bone meal, 109, 145, 153 ; effect on 

 pastures, 331 



Bjies, II, 103, 106, 145 ; dissolved, 



113,155 

 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 

 li'rown on assimilation, 14 



Cabbages, manures for, 316 

 Cake-fed dung, 203 ; cost of, 227 

 Calcium carbide, 38 

 Calcium carbonate, 2 50 ; removed 



from soil, 56, 62 

 Calcium cyanamide, 38 

 Calcium phosphates, 104, 142 

 Caliche, 46 

 Candolle, 293 

 Carbide, combination of nitrogen 



with calcium, 38 



