820 EXPEEIMENT STATION RECORD. 



Soil inoculation under soil conditions of lime deficiency, T. D. Beckwith 

 (Science, n. ser., 38 (1913), No. 977, p. 4^4).— This is an abstract of a paper 

 presented before tbe Society of American Bacteriologists. 



It is stated that pure cultures of Bacillus radicicola were distributed and 

 tested in various parts of Oregon. On the soils of western Oregon, which are 

 generally somewhat deficient in lime, 69 per cent of the tests were successful, 

 while on soils of eastern Oregon, which are well supplied with lime, 90 per cent 

 of the tests were successful. 



The bread supply, C. G. Hopkins (Science, n. ser., 38 (1913), No. 979, pp. 

 479-481 ) . — This is a discussion of an article by H. L. Bolley, on cereal cropping, 

 Which has already been noted (E. S. R., 29, p. 516). 



The author emphasizes especially the importance of the chemical determi- 

 nation of plant food as a means of judging the productive capacity of soils. 



Bread from stones, C. G. Hopkins (Illinois Sta. Circ. 168, pp. 4> ^- ec?. rev., 

 pp. 8, figs. 5). — This circular describes the system used to improve a fnrm of 

 poor gray prairie land in southern Illinois. The system followed during 10 

 years has included a 6-year rotation of com, oats (or cowpeas), and wheat, and 

 3 years of meadow and pasture of clover and timothy. Two applications have 

 been made of ground limestone (4 tons per acre) and rock phosphate (2 tons), 

 and one of barnyard manure (6 loads). 



Soil experiments on Caldwell field, T. L. Lyon (Cornell Countryman, 11 

 (1913), No. 1, pp. 4~11, fios. 5). — This article describes the lay-out of plats and 

 the methods and results of experiments on these plats, as well as a series of 

 concrete soil tanljs, on this field at New Torli Cornell Experiment Station. 



Farm manures, C. E. Thorne (New York and London, 1913, pp. VII +242, 

 figs. 23). — Since the publication of Harris's A'ery practical " Tallis on Manures" 

 the experiment stations have accumulated a large amount of more exact data 

 on the subject, which, however, are scattered in various bulletins and other 

 publications. The object achieved in this book is the arrangement of this in- 

 formation in convenient form for ready reference and practical use. A few 

 short introductory chapters treat in a more general way of the origin and com- 

 position of the soil and the feeding of the plant. The subject proper is dis- 

 cussed under the heads of composition, production, value, waste, preservation, 

 reinforcement, and methods of applying manures ; where to use manure ; green 

 manuring; and planning the farm management for fertility maintenance. Most 

 of the facts presented have back of them the force of years of painstaking in- 

 vestigation, some of the most important and convincing of which has been 

 carried on by the author at the Ohio Station. 



Poultry manures, their treatment and use, H. D. Haskins and L. S. Walkeb 

 (Massachusetts Sta. Circ. 35, pp. 4)- — Analyses of samples of poultry manure 

 obtained with different kinds of feeds, which had been subjected to difi;erent 

 methods of handling and keeping are reported and methods of preservation are 

 recommended. The results show that manure produced by fowls receiving 

 animal food is richer in nitrogen than that of fowls receiving only grain food, 

 and that manure unmixed with absorbents or chemicals suffers very rapid loss 

 of nitrogen. 



The action of green manures, O. Mielck (Fiihling's Landw. Ztg.. 62 (1913). 

 No. 17, pp. 585-612, figs. 9). — The work of other investigators with reference to 

 the action of the nitrogen of green manures and the secondary effects of green 

 manuring is reviewed, and tests by the author on the comparative merits of 

 different leguminous plants — horse beans, peas, vetch, crimson clover, etc. — are 

 reported. The results of these tests favored the common vetch. 



