870 



AGRICULTURAL INDEX 



Soil percolation — Continued 



How to get rich lands; soil washing and 

 leaching: their relation to soil fertility. B. L. 

 Moss. Prog F 32:251 P 24 '17 



Investigations relative to the use of nitrogen- 

 ous plant-foods, 1898-1912. J. G. Lipman 

 and A. W. Blair. N J Ag Exp B 288:1-126 

 '16 



Loss of fertilizers by leaching. S. B. Collison 

 and S. S. Walker. Fla Ag Exp B 132:1-20 '16 



Lysimeter experiments; records for tanks 1 to 

 12 during the years 1910 to 1914 inclusive. 

 T. L. Lyon and J. A. Bizzell. bibliog il plan 

 Cornell Ag Exp Memoir 12:1-115 '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 



Washing out of nitrate from arable soil dur- 

 ing the past winter. E. J. Russell and A. 

 Appleyard. J Bd Ag 23:22-7 Ap '16 



Water penetration in the gumbo soils of the 

 Belle Fourche reclamation project. O. R. 

 Mathews. U S Ag B 447:1-12 '16 



See ulso Lysimeters; Soil absorption; Soil 

 moisture 

 Soil products exhibition 



Prairie provinces; their success at the soil 

 products exhibition. S. T. Newton, il Ag 

 Gaz of Canada 5:1165-6 D '18 

 Soil protozoa 



Activity of soil protozoa. G: P. Koch, bibliog 

 J Ag Research 5:477-88 D 13 '15 



Method for the counting of certain protozoa 

 in the soil. A. Itano and G. B. Ray. bibliog 

 Soil Sci 5:303-10 Ap '18 



New method of separating fungi from proto- 

 zoa and bacteria. N. Kopeloff and others. 

 Bot Gaz 61:247-50 Mr '16 



Relation of carbon bisulphid to soil organ- 

 isms and plant growth. E. B. Fred, bibliog 

 il J Ag Research 6:1-20 Ap 3 '16 



Relation of protozoa to certain groups of soil 

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

 33 Jl '16 



Review of investigations in soil protozoa and 

 soil sterilization. N. Kopeloff and D. A. Cole- 

 man. Soil Sci 3:197-248 Mr '17 



Separation of soil protozoa. N: Kopeloff and 

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

 '15 



Soil protozoa. G: P. Koch, bibliog J Ag Re- 

 search 4:511-59 S '15 



Studies on soil protozoa. S. A. Waksman. bib- 

 liog Soil Sci 1:135-52 F '16 



Studies on soil protozoa and their relation to 

 the bacterial flora. J. M. Sherman, bibliog 

 J Bact 1:35-66, 165-85 Ja, Mr '16 



Studies on the activity of soil protozoa. G: P. 

 Koch, bibliog Soil Sci 2:163-81 Ag '16 

 See also Soil microbiology 

 Bibliography 



Review of investigations in soil protozoa and 

 soil sterilization. N. Kopeloff and D. A. 

 Coleman. Soil Sci 3:248-69 Mr '17 

 Soil sampling 



Are unusual precautions necessary in taking 

 soil samples for ordinary bacteriological 

 tests? C. B. Lipman and D. E. Martin. Soil 

 Sci 6:131-6 Ag '18 



Biological variations in soil plots shown by 

 different methods of sampling. F. E. Alli- 

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

 Je '17 



Soil sampler. Eng & Contracting (608 S. 



Dearborn st, Chicago $3 per yr). 48:427 N 21 



'17 

 Soil sampler for bacteriological and chemical 



purposes. J. R. Neller. il Soil Sci 4:109-13 Ag 



'17 



Soil solution 



Chemical effects of CaO and CaCOs on the 

 soil; effect on water-soluble nutrients in 

 soils. A. F. Christie and J. C. Martin, bib- 

 liog Soil Sci 5:383-92 My '18 



Comparative study of salt requirements for 

 young and for mature Ijuckwheat plants in 

 sand cultures. J: W. Shive. bibliog Soil 

 Sci 6:1-32 Jl '18 



Comparative study of salt requirements for 

 young and for mature buckwheat plants in 

 solution cultures. J: W. Shive and W: H. 

 Martin, bibliog J Ag Research 14:151-75 Jl 



22 '18 



Effect of season and crop growth in modify- 

 ing the soil extract. G. R. Stewart, bibliog 

 il J Ag Research 12:311-68 F 11 '18 



Effect of sterilization of soils by heat and an- 

 tiseptics upon the concentration of the soil 

 solution. G: P. Koch, bibliog Soil Sci 3:525- 

 30 Je '17 



Effect of the concentration of the nutrient 

 solution on the growth of barley and wheat 

 in water cultures. W. E. Brenchley. il Ann 

 Bot 30:77-90 Ja '16 



Freezing-point method as an index to varia- 

 tions in the soil solution due to season and 

 crop growth. D. R. Hoagland. bibliog J Ag 

 Research 12:369-95 F 11 'IS 



Further studies on the freezing point lower- 

 ing of soils. G: J. Bouyoucos and M. M. Mc- 

 Cool. Mich Ag Exp Tech B 31:1-51 '16; Same. 

 Mich Ag Bd Rep 1917:558-605 



Influence of aeration of the nutrient solution 

 in water culture experiments, remarks on 

 the water culture method. W. Stiles and J. 

 Jorgensen. Int R Sci & Prac Ag 9,no 1:44-5 

 Ja '18 



Influence of ammonium sulfate on the germi- 

 nation and the growth of barley in sand and 

 soil cultures kept at different moisture con- 

 tents and at various osmotic concentrations 

 of the soil solution. M. I. Wolkoff. bibliog 

 Soil Sci 5:421-79 Je '18 



Influence of certain added solids upon com- 

 position and efficiency of Knop's nutrient 

 solution. E. H. Toole and W. E. Totting- 

 ham. bibliog Am J Bot 5:452-61 N '18 



New method of extracting the soil solution. 

 C: B. Lipman. Cal Univ Pub Ag Sci v 3, 

 no 7 131-4p '18 (5c) 



New three-salt nutrient solution for plant 

 cultures. B. E. Livingston and W. E. Tot- 

 tingham. Am J Bot 5:337-46 Jl '18 



On the interpretation of the results of water 

 culture experiments. W. Stiles. Ann Bot 30: 

 427-36 Jl '16 



Physiological balance in the soil solution. 

 R. P. Hibbard. il Mich Ag Exp Tech B 40: 

 1-44 '17 



Relation between biological activities in the 

 presence of various salts and the concentra- 

 tion of the soil solution in different classes 

 of soil. C. E. Millar. J Ag Research 13:213- 



23 Ap 22 '18 



Soil solution as an index of the biological 

 changes in the soil. J. F. Morgan. Mich 

 Ag Exp Tech B 39:1-24 '17 



Soil solution obtained by action of a hydraulic 

 press. G. Ramann and others. (abs. in 

 J. Chem. Soc. [London] 112 (1917), no. 655, 

 I, p. 311-12). Exp Sta Record 38, no 6:512 '18 



Soil solution obtained by the oil pressure 

 method. J. F. Morgan, bibliog il Mich Ag 

 Exp Tech B 28:1-38 '16; Same. Mich Ag Bd 

 Rep 1917:497-529; Same cond. Soil Sci 3:531- 

 45 Je '17 



Study of physiological balance for buckwheat 

 grown in three-salt solutions. J: W. Shive. 

 bibliog N J Ag Exp B 319:1-63 '17 



Study of soil solutions by means of semiper- 

 meable membrane supported on a porous 

 clay plate. G: L. Schuster, il Am Soc Agron 

 J 9:333-40 O '17 



True soil solution. Z. Northrup. Science 

 (Science Press, Garrison, N.Y. 15c) n s 47: 

 638-9 Je 28 '18 



Water extractions of soils as criteria of their 

 crop-producing power. J: S. Burd. J Ag Re- 

 search 12:297-309 F 11 '18 

 Soil sterilization. See Soil disinfection 

 Soil surveys 



On taking samples of soil for soil surveys. 

 E. J. Russell. J Bd Ag 23:342-9 Jl '16 



Soil survey. J. H. Bromley. Cornell Country- 

 man 15:529-30 Je '18 



Soil surveys and their significance. A. T. 

 Wiancko. Purdue Ag 10:18-19 Ja '16 

 Alabama 



Soil survev of Barbour county, Alabama. 

 H. C. Smith and others. (Soils bur. advance 

 sheets) 50p map '16 U S Ag 



