864 



AGRICULTURAL INDEX 



Soil bacteriology — Continued 

 Bacterial toxins in soils. R. Greig--Smith. J 



Dept As Victoria 16:119-20 F '18 

 Bacteriological studies of a soil subjected to 

 different svstems of cropping for twenty- 

 five years. P. L. Gainey and W. M. Gibbs. 

 bibliog J Ag Research 6:953-75 S 11 '16 , 

 Biological changes in soil during storage. 

 P. E. Alli.son. bibliog Soil Sci 3:37-62 Ja '17 

 Biological variations in soil plots as shown by 

 different methods of sampling. F. E. Allison 

 and D. A. Coleman. Soil Sci 3:499-505 Je 

 '17 

 Cause of the disappearance of cumarin, van- 

 illin, pyridine and quinoline in the soil. 

 W: J. Robbins. bibliog il Ala Ag Exp B 

 195:49-64 '17 

 Cause of the disappearance of cumarin, vanil- 

 lin, pyridine and qviinoline in the soil; pre- 

 liminary note. W: J. Robbins. Science 

 (Science Press, Garrison, N. Y. 15c) n s 44: 

 894-5 O 22 '16 

 Comparison between agar and gelatin as 

 media for the plate method of counting bac- 

 teria. H. J. Conn and W. D. Dotterrer. N Y 

 State Ag Exp Tech B 53:12-15 '16 

 Correlation between bacterial activity and 

 lime requirement of soils. F. E. Bear, bibliog 

 Soil Sci 4:433-62 D '17 

 * Correlation of the hydrogen-ion exponent and 

 occurrence of bacteria in soil. L. J. Gil- 

 lespie. Science (Science Press, Garrison, 

 N.Y. 15c) ns 48:393-4 O 18 '18 

 Cytological stvidies of azotobacter chroococ- 

 cum. A. Bonazzi. bibliog il J Ag Research 

 4:225-40 Je '15 

 Destrviction of vanillin in the soil by the ac- 

 tion of soil bacteria. W: J. Robbins and 

 A. E. Elizando. bibliog Ala Ag Exp B 204: 

 125-31 '18 

 Diastase activity and invertase activity of 

 bacteria. G: P. Koch, bibliog Soil Sci 1:179- 

 96 F '16 

 Effect of phosphates and sulphates on soil 

 bacteria. Int R Sci & Prac Ag 7, no 2:195 F 

 '16 

 Effect of some acids and alkalis on soil bac- 

 teria in the soil solution. O. M. Gruzit. bib- 

 liog Soil Sci 3:289-95 Mr -17 

 Effect of time and depth of cultivating a 

 wheat seed-bed upon bacterial activity in 

 the soil. P. L. Gainey. bibliog Soil Sci 2: 

 193-204 Ag '16 

 Experiments on the growth of azotobacter. A. 

 Cauda. Int R Sci & Prac Ag 7,no 6:801-2 Je 

 '16 

 Fertilizers and microbes of the soil. Scientific 

 Am (233 Broadway, N.Y. 10c) 116:129 F 3 

 '17 

 How to get rich lands; soil bacteria and their 

 relation to soil fertility. T. Butler. Prog F 

 32:943 S 8 '17 

 Importance of mold action in soils. P. E. 



Brown. Ag J of India 13:529-36 Jl '18 

 Influence of arsenic on the bacterial activities 

 of a soil. J. E. Greaves. Scientific Monthly 

 (Science Press, Garrison, N.Y. 30c) 5:204-9 

 S '17 

 Influence of barnyard manure and water upon 

 the bacterial activities of the soil. J. E. 

 Greaves and E. G. Carter, bibliog J Ag Re- 

 search 6:889-926 S 4 '16 

 Influence of carbonates of magnesium and 

 calcium on bacteria of certain Wisconsin 

 soils. H. L. Fulmer. bibliog J Ag Research 

 12:463-504 F 25 '18 

 Influence of crop, season, and water on the 

 bacterial activities of the soil. J. E. Greaves 

 and others, bibliog J Ag Research 9:293-341 

 My 28 '17 

 Influence of humus forming materials of dif- 

 ferent nitrogen-carbon ratios on bacterial 

 activities. P. E. Brown and F. E. Allison. la 

 Ag Exp Research B 36:1-30 '16 

 Influence of nitrates on nitrogen-assimilating 

 bacteria. T. L. Hills, bibliog J Ag Research 

 12:183-230 Ja 28 '18 

 Influence of reaction on nitrogen-assimilating 

 bacteria. E. B. Fred and A. Davenport, 

 bibliog J Ag Research 14:317-36 Ag 19 '18 

 Influence of soil conditions on the decom- 

 position of organic matter in the soil. E. J. 

 Russell and A. Appleyard. J Ag Sci 8:385- 

 417 Je '17 



Microscopic study of bacteria and fungi in 

 soil. H. J. Conn. N Y State Ag Exp Tech 

 B 64:1-20 '18 

 New method of separating fungi from proto- 

 zoa and bacteria. N. Kopeloff and others. 

 Bot Gaz 61:247-50 Mr '16 

 Next step in improvement in wheat cropping 

 — how to increase wheat production in 1918 

 and 1919. H. L. Bolley. Science (Science 

 Press, Garrison, N.Y. 15c) n s 46:49-54 Jl 20 

 '17 

 Non-persistence of bacterio-toxins in the soil. 

 H. B. Hutchinson and A. C. Thaysen. J Ag 

 Sci 9:43-62 Ag '18 

 Occvirrence of bacteria in frozen soil. E. C. 



Harder. Bot Gaz 61:507-17 Je '16 

 Occurrence of bacterium lactis viscosum In 



soil. C. R. Fellers. Soil Sci 5:487-8 Je '18 

 Potassium requirements of bacteria. G: P. 



Koch, bibliog Soil Sci 5:219-24 Mr '18 

 Preliminary experiments on some effects of 

 leaching on the soil flora. C: B. Lipman 

 and L. W. Fowler, bibliog Soil Sci 1:291-7 

 Mr '16 

 Preliminary report on muck humus as a fer- 

 tilizer and carrier of beneflcial soil bacteria. 

 T: P. Manns and J. M. Goheen. il Del Ag 

 Exp B 115:1-40 "16 

 Proof of microbial agency in the chemical 

 transformations of soil. H. J. Conn. Science 

 (Science Press, Garrison, N.Y. 15c) n s 46: 

 252-5 S 14 '17 

 Quantitative media for the estimation of bac- 

 teria in soils. R. C. Cook, bibliog Soil Sci 

 1:153-61 F '16 

 Relation between certain bacterial activities 

 in soils and their crop-producing power. 

 P. E. Brown. J Ag Research 5:855-69 Ja 31 

 '16 

 Relation of manures to bacterial action and 

 growth in the soil. L. E. Husted. Purdue 

 Ag 13:126-7 D '18 

 Relation of protozoa to certain groups of soil 

 bacteria. T. L. Hills, bibliog J Bact 1:423-33 

 Jl '16 

 Relative importance of fungi and bacteria in 

 soil. H. J. Conn. Science (Science Press, 

 Garrison, N.Y. 15c) ns 44:857-8 D 15 '16 

 Researches in agricultural bacteriology car- 

 ried out in Denmark during the period 1904- 

 1914. H. R. Christensen. Int R Sci & Prac 

 Ag 7,no 8:1081-4 Ag '16 

 Separation of soil protozoa. N: Kopeloff and 

 others, bibliog J Ag Research 5:137-40 O 18 

 '15 

 Soil bacteria and phosphates. C. G. Hopkins 

 and A. L. Whiting. Ill Ag Exp B 190:395- 

 406 '16 

 Soil bacteria; their activities have important 

 influences on soil fertility. E. R. Allen, il 

 Ohio Ag Exp B v 2:130-2 Ap '17 

 Soil reaction and the growth of azotobacter. 

 P. L. Gainey. J Ag Research 14:265-71 Ag 12 

 •18 

 Some aspects of soil biology. H. A. Noyes. 



il Purdue Ag 12:548-9 Je '18 

 Some bacteriological studies on agar agar. 

 C. R. Fellers, bibliog il Soil Sci 2:255-90 S 

 •16 

 Stvidies on soil protozoa and their relation to 

 the bacterial flora. J. M. Sherman, bibliog J 

 Bact 1:165-85 Mr '16 

 Studies on the decomposition of cellulose in 

 soils. I. G. McBeth. bibliog Soil Sci 1:437-87 

 My '16 



iS'fc also Actinomycetes; Ammoniflcation; 

 Ferriflcation; Nitrification; Soil inoculation; 

 Soil microbiology; Soil protozoa; Sulfoflca- 

 tion 



Soil colloids 



Flocculation of soil colloidal solutions. M. I. 



Wolkoff. bibliog Soil Sci 1:585-601 Je '16 

 Fundamental interrelationships between cer- 

 tain soluble salts and soil colloids. L. T. 



Sharp. Cal Univ Pub Ag Sci v l,no 10:291- 



339 '16 (50c) 

 Importance of colloids in forestry. For Quar 



14:327-8 Je '16 

 Studies on soil colloids: influence of colloids 



on electrical conductivity of salts. M. I. 



Wolkoff. bibliog Soil Sci 3:423-30 My '17 

 See also Soil adsorption 



