SOIL SCIENCE 



ESTABLISHED BT 



RUTGERS COLLEGE 

 JACOB G. LXPMAN, Editor-in-Chief CARL R. WOODWARD, Assistant Editor 



IN consultation with 



DR. F. J. ALWAY DR. II. J. CONN DB. 0. II. I.1PMAN PROF. O. ROSSI 



DR. C. BARTIIEL DB H. VON EEILlTZi.N ""• ''■ LUIINJS DB. B. J- I'.' "-III. 



DR. M. W. HEIJERINCK DR E B FRED DR - T - L ' LYON DBl 0l 8cllllf 



PROF. A. W. BL.UK ' ," ' .„ HMITR DR. E. A. M1TSCHERLICH DR. A. A. V. DB BIOMOND 



DR. P. E. BROWN U1W.1U OMllll |I(OF. C. A. MOOER3 PROF. CIIAS. E.TIIORNB 



DIRECTOR H. R. CHRISTENSEN DR - B " h - HARTWELL VH tuko . ],EMV DR. N. Tl LAIKOFF 



Soil Science is devoted to the l> mailer outlook of the eni ire field of soil fertility. 



Articles dealing with the more important farts, observations, deductions and problems of 

 soil biology, soil chemistry, and Boil physics arc published. 



Papers devoted to plant physiology, agronomy, bacteriology, or geology, are accepted for 

 publication if they contribute directly to the knowledge of soil fertility. 



The study of the mineral and organic constituents of soils, soil gases, soil water as a sol- 

 vent of Boil material, soil colloids, the transformation of commercial plant foods in soils, 

 questions thai ileal with the fundamental facts of soil fertility and productivity, are given 

 due consideration. 



The phenomena concerning soil micro-organisms, such as bacteria, molds, protozoa, and 

 algae, receive careful attention. 



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1920 Abstracts of Bacteriology Volume IV 



Comprising complete reviews and abstracts of American and foreign work in Bacteriology, 

 Mycology and Protozoology in their relation to the arts and sciences 



Under the editorial direction of the 

 Society of American Bacteriologists 



Editor 

 A. PARKER HITCHENS 



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