INDEX. 
Page 
Near. beei, medium for development oflbacteriac:--...-.55-.---42...--2-2225 9, 24 
Alkali, black. See Sodium carbonate. 
relation of chlorids and sulphates to nitrifying power..............--- 21-22 
IMMMOMMM CAT On ydetmnltlOMsOn Gerla ase. an arte ae hee 7 
measurement of power of soil flora at Fallon, Nev..........- 30, 31 
methods of determination in soil studies at Fallon, Nev...... 9, 30 
Ammonium sulphate, use in soil studies at Fallon, Nev.....-..--.-- 10, 12-22, 27, 29 
Analysis, chemical, methods employed in soil studies at Fallon, Nev........ 10-11, 
26-27, 30, 31 
Bacteria, colonies peculiar to certain soils at Fallon, Nev..............-..---- 32 
counts, methods used in soil studies at Fallon, Nev.........-. 9, 10, 26-27 
nitrifying, comparative action in soil and in solution, at Fallon, Nev. 30 
number and distribution, relation to character of soil, at Fallon, 
INQ YR EHE es es ree RE CG Reta ea ARE ea aes lA) SEPT 24-25, 32 
Black alkali. See Sodium carbonate. 
Brown, P. E., and Lipman, J. G., on methods and results of soil studies...... 9, 30 
Calcium sulphate, effect upon soil samples at Fallon, Nev. ...........- 26, 27-28, 29 
Chemical anaylsis. See Analysis, chemical. 
Chester, rE Dy on! the bacteriological analysis of soils.... 2... 2. -2-- +2. 2-5- 24 
Clay, colloidal, affected by calcium sulphate and gypsum at Fallon, Nev..... 26 
OcelErencesmesoll samplestatctalilon’ Nev ccetssscceas 4] aes eae 10 
CP onelsioms rote bullet ume eee ee RE oth eo ree oe Rae Cate at gee 32-33 
Decomposition, organic, product peculiar to poor soil at Fallon, Nev -...-..-.... 26 
Demitrnecation: detimitiom of termi gs = be. ce ee ee ou 
methods of study employed at Fallon, Nev............- 11, 22-24, 31 
Dipotassium phosphate, use in peptone solutions at Fallon, Nev. ..--....-..-. i) 
Dunham’s peptone solution. See Peptone, Dunham’s solution. 
PxdTACtsOllpmMet nO dsompreparatlOW tos. 2k Ome noe oe ch oe Ae Se ee 10 
Failyer, G. H., and Schreiner, Oswald, om analyses of soils.....-.....-.---..-- ul 
Fallon, Nev., locality of investigations in soil bacteriology... 7,8, 11, 18, 20, 24, 25, 33 
PAM rAtiOoneOlsollaextracis. Mallon) “Nev. 22 0 os oe eee oe 10 
Casio, etrect upon colloidal: clays; at Pallom, Nev---..-.:.:-=..1...-.----- 26 
Humification, importance of investigations at Fallon, Nev...-....-..-..-.-.---- 33 
Posen OM tOmOMllotiieg crocs Sv Sk Seok eS Oh a es 7-8 
Investigations, bacteriological, methods employed at Fallon, Nev....-...--.- 8=11, 
22, 26-27, 30, 31 
Jensen, C. A., determination of chlorids and sulphates in soil at Fallon, Nev... 11, 16 
Lipman, J. G., and Brown, P. E., on methods and results of soil studies... ... 9, 30 
Voorhees, E. B., on investigations in soil bacteriology. ..- 24 
onebacteniological amvestigations 5 1.045222 424- 25 hose ee eee 9 
use-of dried blood as a source of nitrogen.................- 30 
ie iio On bacteriolocical investicatlons .....+--e2+-50---5- 25-252 6 9, 24 
Magnesium sulphate, use in peptone solutions at Fallon, Nev.............-... 9 
_ Methods of bacteriological investigation. See Investigations. 
Micro-organisms, relation to soil study at Fallon, Nev....................----- 7,8-9 
211 390 
