jjj Boden und Düngung. 603 



105. HouWelingen, P. van. Over h^^groscopicitet van den bodem. 

 1905. (Archief v. d. Java-Suikerindustrie, XIII [1905]; zugl. Meded. v. d. Proef- 

 station Oost-Java, 4. Ser., No. 8, 14 pp.) 



106. Bjiert, A. van. Bydra^-e tot het onderzoek van zand in 

 tropische gronden. (Vortrag allg. Versamml. nederl. ehem. Ver. Wage- 

 ningen [1906]. 8 pp.) 



107. New seil studies. (Bull. Dep. Agric. Jamaica, V [1907], p. 243 

 bis 245.) 



Aus „The Plant World«, Vol. 10, No. 9, Sept. (1907), p. 209-213. 



108. Jnritz, Ch. F. Fertility of some colonial soils, as influenced 

 by geological conditions. (Agric. Journ. Cape of Good Hope, XXX 

 [1907], p. 454-476.) 



109. Fertilizers. (The Trop. Agriculturist and Mag., vol. XXIX [1907), 

 p. 201—202.) 



Knochenmehl, Knochenkohle, Ammoniumsalze und -nitrate, Basen. 

 Knochensuperphosphat, Kainit, Kaliumsulfat, Asche. 



110. May, D. W. Fertilizers. (Bull, of misc. Inf., Trinidad |1907], 

 No. 54, p. 215—228, Abdruck des Zirkular No. 6 der Portorico Exper. Stat.) 



Natural manures. Comercial fertilizers: Nitrogen, phorphorus, potash. 

 Baumwolle gebraucht besonders Phosphor, Tabak Stickstoff und Alkalien, 

 wenn die Beschaffenheit der Erde in Portorico in Betracht gezogen wii-d. 



111. Hall, A. D. On the accumulation of fertility by land allow- 

 ed to run wild. (Bull. Dep. Agr. Jamaica, V [1907], p. 98—100.) 



Auszug einer Schrift gleichen Titels. 



112. Hall, A. D. How long does lime last in the soil7 (Journ. of 

 the Engl. Board of Agric, Sept. [1906].) 



113. Felber und AValta. Die Kalidüngung in den Tropen und Sub- 

 tropen. Halle a. S. (Otto Thiele) 1907, 116 pp., 2 Fig. 



114. The use of waste organic substances as manures. (Bull, 

 of misc. Inform., Trinidad [1907], No. 53, p. 161—164.) 



Auszug aus dem Artikel des Leaflet No. 175 issued by Board of Agri- 

 culture and Fisheries. 



115. de Kruyff, E. Les Bacteries hydrolysant et oxydant les 

 graisses. (Bull. Dept. Agriculture Indes Neerlandaises, IX [1907], Micro- 

 Biologie, III, 13 pp., 2 Taf., 3 Tab.) 



116. Asliby, S. F. The nitrogen cycle and soil organisms. (West- 

 Ind. Bull. [1907], vol. VIII, p. 94—102.) 



The bringing into combination of free nitrogen gas. The breaking 

 down of albuminous matter. Nitrification. Denitrification. 



117. Oodlonton, G. M. The rotation and manuring of crops. (Prize 

 essay.) (Agric. Journ. Üape of Good Hope, XXX [1907], p. 496-502.) 



118. Willis, J. C. Rotation of crops on chena land. (The Tropic. 

 Agriculturist and Mag., vol. XXIX [1907], p. 149-150.) 



119. The value of poultry manure. (The Agric. News, vol. VI 

 [1907], p. 189.) 



Nach dem Journ. of the Board of Agriculture, March (1907). 



120. Jaritz, ('. F. Orange River Silt as a fertilising agent. (Agric. 

 Journ. Cape of Good Hope, XXXI, p. 295—299.) 



121. The principles of tillage and rotation. (The Tropic. Agri- 

 culturist and Mag., vol. XXIX [1907], p. 78—84.) 



