36 SOILS OF THE TRUCKEE-CARSON IRRIGATION PROJECT. 
Page 
Nitrate formed, from nitrite, at: Hallon] Neyeese eee eee els ee is 29 
Nitrification, definition and method of study, etc., at Fallon, Nev...-...... 7, 10-11 
of soil samples in solution at Fallon, Nev......--...---..- 12-25, 27-30 
Nitrite formed from: ammonia, at_Fallon\sNevocwce---- 2-2 eee 28 
Nitrogen, free,-relation to presence of bacteria at Fallon, Nev.--............-- 223K 
nitric, quantity originally present, in soil samples at Fallon, Nev.. 8, 12-20 
symbiotic and nonsymbiotic fixation, definition ...........-........-. 7 
determination, at Fallon, Nev. ili 
Omelianski and Winogradsky, formula for fluid culture medium.......... 19, 27, 28 
Peptone, ammonification in soil samples at Fallon, Nev........-............- 30, 31 
Dunham’s solution, use in denitrification studies at Fallon, Nev..... 1 22, 
solutions, composition, used at Fallon, Nev_................-2-222. 9 
Potassium chromate, use in determining chlorids at Fallon, Nev.............. det 
nitrate, ingredient of peptone solution used at Fallon, Nev......... 11 
Remy, Theodor, on bacteriological investigations ..-.........-..:.--.....--- 9 
Rogers, 8. J., and Scofield, C. 8., on description of Truckee-Carson Experi- 
ment, Warm: . ic. 32S. s 5s Ses tol ee = ee 8 
Schreiner, Oswald, and Failyer, G. H.; on analyses of soils..................- tt 
Scofield, C. S., on description of Truckee-Carson Experiment Farm........... 8 
Silver nitrate, use in determination of chlorids at Fallon, Nev................. 11 
sulphate, use for removal of chlorids at Fallon, Nev................... 11 
Sodium carbonate, presence in soilsat Fallon, Nev.......:...-..1..-.....-:-- 26, 28 
chlorid, use in peptone solutions at Fallon, Nev......................- 9 
Soils, eastern and western, comparison of properties.....-...-.-......-...-- RAD Ae 
methods of treatment of samples at Fallon, Nev.......... 8-11, 22, 26-27, 30, 31 
nitrification at different: depths at Pallon Nev sssssss-e eee eee 7, 12-20 
outline of plan of investigations at Fallon, Nev.........-:...-..---...-- 7-8 
typical, detailled:study at Fallon, Nev 2225) 525s es ae 25-32 
Sulphate of ammonia. See Ammonium sulphate. 
Syme.) W. Al. on- method of estimating nitrates. 22-02) ss. 2) eae ee 11 
Truckee-Carson Experiment Farm. See Fallon, Nev. 
Urea, use in removal of nitrites from nitrates at Fallon, Nev................... 11 
Voorhees, E. B., and Lipman, J. G., on bacteriological investigations.......... 24 
Winogradsky and Omelianski, formula for fluid culture medium........... 19, 27, 28 
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