720 EXPERIMENT STATION RECORD, 



On the planting and reclamation of moors and bogs in Belgium, with 

 special reference to the use of artificial manures, A. P. Grenfell (Quart. 

 Jour. Forestry, 2 {1908), No. Ii, pp. 261-282, fig. 1). — This article gives an ac- 

 count of drainage and reforestation experiments in the royal forests of Herto- 

 genwald, of eastern Belgium, and of drainage, irrigation, trenching, fertilizing, 

 and fixation of moving sands on the dry sandy heaths and marshes of the 

 Campine. Systems of drainage employed are described with specifications of 

 cost. 



In the improvement of the soils of the Campine " recourse is had to artificial 

 manures, sometimes to road scrapings and town refuse, or both together ; or 

 better still to artificial combined with green manures, especially lupines. In 

 the last case catch crops, especially barley, can be reaped, which will materially 

 diminish the cost. 



" The use of basic slag and kainit, also of lupines, has become part of modern 

 practice for the planting and reafforestation of the Campine, and has already 

 given satisfactory results." 



Analyses of typical soils of the Campine at different depths are reported. 



Progress in moor culture during the last 25 years, M. Fleischer et al. 

 {Die Entivickelung der Moorkultur in den letzten 25 Jaliren. Berlin, WOS, 

 pp. XXVIII+233, pis. 6, figs. 107). — This volume was prepared in celebration 

 of the first 25 years* existence of the Association for the Advancement of Moor 

 Culture in the German Empire. 



It contiiins a brief review of the work of the association by M. Fleischer, and 

 papers on state work on moor culture in Prussia by H. Thiel ; the moor culture 

 station of Bremen by B. Tacke et al ; state work in moor culture in Bavaria by 

 A. Baumanu ; the scope and results of the German-Austrian Moor Culture 

 Association by H. Schreiber; progress in moor culture in Denmark by T. C, 

 Westh, in Sweden by H. von Feilitzen, in Norway by J. G. Thaulow, and in 

 Finland by A. Eiudell ; the most important forms of humus and peat in the 

 North German moors by C. A. Weber ; colonization of the upland moors by 

 Quaet-Fiislem ; the use of convicts in moor culture and colonization by Krohne ; 

 the formation and care of meadows and pastures on upland moors by B. Tacke, 

 and on lowland moors by Krahmer; moor drainage by Sarauw; moor structures 

 by Kruger; and the present status of the industrial use of peat as fuel by L. C. 

 AVolff. 



New methods in the field of moor culture, B. Tacke (Aun. ^ci. Agron., 3. 

 ser., 3 (1908), I, pp. 68-72; Zentbl. Agr. Chem., 37 {1908), No. 5, pp. 291-295).— 

 This is a report submitted to the Eighth International Congress of Agriculture 

 at Vienna, which deals briefly with kinds and character of moors, and their 

 preparation for cultivation, drainage, cultivation and utilization, fertilizing, 

 suitable systems of farming, and colonization. 



Modern and early work upon the question of root excretions, H. S. Reed 

 {Pop. 8ci. Mo., 73 {1908), No. 3, pp. 257-266) .—This article reviews the work 

 on root excretions by different investigators and reports some of the results 

 secured by the Bureau of Soils of this Department. Soil upon which wheat 

 failed to grow after continuous wheat culture yielded a small quantity of a 

 crystalline organic compound which, when dissolved in pure water, showed a 

 toxic action upon wheat plants while relatively harmless to cowpeas. In a 

 similar way cowpea-siek soil furnished crystals found to be harmful to cow- 

 peas but relatively harmless to wheat plants. The same soil in which neither 

 plant was grown yielded none of these substances, and hence it is concluded 

 that these substances were formed as a result of the plant growth in that soil. 



Crop rotation and soil exhaustion, F. Fletcher {Separate from Cairo Sci. 

 Jour., 2 {1908), No. 19, pp. S).— Noted from another source (E. S. R., 20, p. 521). 



