•JT" 



INDEX 



Legumes, influence on soil fertil- 

 ity, 1 71-18 1 

 LegumeSj inoculation of, 165-170 

 Legumes, nitrogen fixed by, 163- 



165 

 Legumes, nitrogen in, 176-177 

 Legumes, sources of nitrogen for, 



157. X75> 176 

 Liebig, 6, 8, 156 

 Life, origin of, 3 

 Light, influence on bacteria, 66 

 Light, produced by bacteria, 5 1 

 Lime, as a disinfectant, 70 

 Lime, influence on nitrogen fixa- 

 tion, 142, 143 

 Lipman, 114, 123, 128, 153, 



155, 162, 168 

 Lohnis, 155 

 Losses in manure, 212, 213 



M 



requirements 



of 



Magnesium, 



plants, 89 

 Manure, 210-218 

 Manurfe, composition, 210, 2H 

 Manure, green, 2 1 7 

 Manure, influence on ammonifica- 



tion, 215, 21 6 

 Manure, influence on bacteria, 



215 

 Manure, influence on nitrification, 



216, 217 

 Manure, influence on nitrogen 



fixation, 145, 161, 162 

 Manure, losses of, 212, 213 

 Manure, losses of nitrates from, 



133. I34> 135 



Manure, speed ammonified, 114 



Manure, value of, 213-215 



Metabiosis, 60 



Mesophilic-bacteria, 63, 64 



Micron, 27 



Microorganisms, 95 



Microorganisms, shape and struc- 

 ture, 23-35 



Milk, bacteria in, 15 



Moisture, influence on ammonifi- 

 cation, 1 1 5 



Moisture, influence on dcnitrifica- 

 tion, 136 



Moisture, influence of nitrifica- 

 tion, 125 



Molds, definition of, 14 



Molds, morphology of, 35 



Molds, nitrogen fixed by, 141- 

 142 



Movement of bacteria, 28-30 



N 

 Needham, 4 



NephI soil, composition of, 90 

 Nitrate, beds in Peru, 8 

 Nitrate, ferments isolated, 9 

 Nitrate, losses of, 129, 133, 134 

 Nitrate losses, influence of v^^ater 



on, 131 

 Nitrates, influence on azotobacter, 



144 

 Nitrates, quantity produced in soil, 



127 

 Nitrates, used by legumes, 177, 



178 

 Nitrates, variation v^^ith depth, 



124 

 Nitrification, 19, n 8-1 31 



