718 EXPERIMENT STATION RECORD. 



"with a more complete knowledge of tlie composition of the organic matter of 

 soils one will be able to predict more detiuitely in regard to the possible avail- 

 ability of some of the plant food elements in combination with it." 



Soil and soil problems from the standpoint of the microbiologist, O. Rahn 

 (Kpt. Midi. Acad. -S'c/., 13 (IVll), j)p. .'iG-oJ). — The important problems of soil 

 bacteriology, in the author's opinion, are the determination of the humus forming 

 organisms and their habits and food requirements, the constancy of the numbei' 

 of bacteria, bacterial action in soil and in solution, the influence of organic 

 matter on bacterial development, and the relation of micro-organisms to the 

 physical structure of soils. 



Soil and soil problems from standpoint of botanist, W. H. Brown (Rfjt. 

 Mich. Acad. Sci., 13 (1911), pp. 52-5.'i). — In the author's opinion the important 

 studies of the future, both from a scientific and a practical standpoint, are the 

 form in which substances enter the plant, the relation of soil condition to plant 

 physiology, the origin of toxic substances in the soil, and the oxidizing and 

 reducing power of roots. 



The influence of the soil type on the plant variety, J. L. Burgess {Bui. 

 N. C. Dept. Affi:, 33 {1912), No. 1, pp. 16). — This paper shows the importance 

 of a more careful study of the crop adaptations of the different soil types of the 

 State and points out the value and wisdom of the work of mapping and 

 analyzing the different soils. 



Field operations of the Bureau of Soils, 1909 (eleventh report), M. Whit- 

 ney ET AL, {JJ. 8. Dept. Agr., Field Operations of the Bureau of Soils, 1909, pp. 

 1756, 2)ls. 25, figs. 58, maps 53). — This reix)rt contains a general review of the 

 field operations of the Bureau of Soils during 1909 by the chief of the Bureau, 

 together with detailed accounts of the following surveys : 



Orono area. Me., by O. Lee, jr. ; Nashua area, N. H., by C N. Mooney and 

 W. C. Byers; Washington County, N. Y., by M. E. Carr, G. A. Crabb, V. J. 

 Frost, and D. W. Hallock ; Berks County, Peun., by W. J. Geib, E. L. Worthen, 

 F. S. Welsh, J. C. Britton, and C. R. Zappone, jr. ; reconnoissance survey of 

 southwestern Pennsylvania, by H. J. Wilder and C. F. Shaw; Anne Arundel 

 County, Md., by J. C. Britton and C. R. Zappone, jr.; Campbell Coimty, Va., 

 by R. A. Winston ; Gaston County, N. C, by W. E, Hearn, L. L. Brinkley, and 

 F. P. Drane; Lake Mattamuskeet area, N. C, by W. E. Hearn; Pitt County, 

 N, C, by W. E. Hearn, R. B. Hardison, J. W. Nelson, and F. P. Drane; Scot- 

 land County, N. C, by R. B. Hardison, J. W. Nelson, and D. D. Long; Conway 

 area, S. C, by W. J. Latimer and C. Van Duyue; Anderson, Franklin, and 

 Saluda counties, S. C, by W. E. McLendon ; Hancock County, Ga., by G. B. 

 Maynadier and W. J. Geib; Pike County, Ga., by C. N. Mooney and G. B. 

 Maynadier ; Tift County, Ga., by J. C. Britton and P. O. Wood ; Marianna area, 

 Fla., by G. B. Jones, R. W. Rowe, J. C. Britton, R. B. Hardison, and C. R. 

 Zappone, jr.; Chambers and Tallapoosa counties, Ala., by H. C. Smith and 

 P. H. Avary ; Hale County, Ala., by R. W. Rowe, W. G. Smith, and C. S. Wal- 

 drop ; Baldwin County, Ala., by W. E. Tharp, H. Jennings, C. S. Waldrop, W. L. 

 Lett, P. H. Avary, and L. Cantrell; Coffee County, Ala., by L. A. Hurst and 

 A. D. Cameron ; Clay County, Miss., by E. L. Worthen ; Scranton area. Miss., 

 by O. Lee, jr., R. T. Allen, and R. A. Winston; Lincoln Parish, La., by C. J. 

 Mann and L. A. Kolbe; Grayson County, Texas, by F. Bennett, C. Lounsbury, 

 R. T. A. Burke, A, T. Sweet, and P. O. Wood ; Morris County, Texas, by E. B. 

 Watson and R. T. Allen; Titus County, Texas, by T. D. Rice and E. B, Watson; 

 reconnoissance survey of south Texas, by G. N. Coffey et al. ; Auglaize County, 

 Ohio, by W. J. Geib; Sumner County, Tenn., by C. N. Mooney, O. L. Ayrs, and 

 J. L. Burgess; Spencer area, W. Va., by W. J. Latimer and F. N. Meeker; 

 Waushara County, Wis., by J. W. Nelson, G. Conrey, and A. K. Kuhlman; re- 



