272 
L. Ritter v. Porfheim und M. Samec, 
Aso 2 ), Bernardini und Corso 3 ), Daikuhara 4 ), Furuta 5 ), 
Kanomata 6 ), Katayama 7 ), Kumagiri 8 ), Loew 9 ) und Aso, Loew 10 ) 
und Honda, Maki und Tanaka 11 ), May 12 ), Namikawa 13 ), Sirker 14 ), 
2) Aso, K., The Bulletin of the College of Agriculture, Tokyo Imp.-Univ., 
Vol. IV, 1902, pag. 361, zit. nach Czapek, Biochemie der Pflanzen, 1905, II, 
pag. 850. 
Ders., On the Influence of a certain Ratio between Lime and Magnesia on 
the Growth of the Mulberrytree. The Bulletin of the College of Agriculture, Tokyo, 
Imp.-Univ., Yol. Y, 1902/03, pag. 495. 
Ders., On the Influence of different Ratios of Tarne to Magnesia on the 
Growth of Rice. The Bulletin of the College of Agriculture, Tokyo, Imp.-Univ., 
Vol. VI, 1904/05, pag. 97. 
3) Bernardini, L. e Corso, G., Intorno all’influenca di vari rapporti fra 
calce e magnesia sullo sviluppo delle piante. Gazetta chimica italiana 1907, 
XXXVII, Fase. VI, pag. 232. 
4) Daikuhara, G., 1. c. 
5) Furuta, T., The Bulletin of the College of Agriculture, Tokyo, Imp.- 
Univ., Vol IV, pag. 371; zit. nach Czapek, Biochemie der Pflanzen 1905, II, 
pag. 850. 
6 ) Kanomata, C., On the Depression of Growth by large Doses of Lime. 
The Bulletin of the College of Agriculture, Tokyo, Vol. VII, 1906/08, pag. 599. 
7) Katayama, T., On the Determination of the available Amounts of Lime 
and Magnesia in the Soil. The Bulletin of the College of Agriculture, Tokyo, 
Vol. VI, 1904/05, pag. 103. 
8 ) Kumagiri, S., On the physiological Effects of an Excess of Magnesia 
upon Barley. The Bulletin of the College'of Agriculture, Tokyo, Vol. VII, 1906/08, 
pag. 441. 
9) Loew, O-, Liming of Soils from a physiological Standpoint. The Re¬ 
lation of Lime ou Magnesia to Plant Growth. U. S. Department of Agriculture, 
Bureau of Plant-Industry, Washington 1901, Bull. Nr. 1, pag. 9. 
Loew, O. and Aso, K., On different Degrees of Availability of Plant 
Nutrients. The Bulletin of the College of Agriculture, Tokyo, Vol. VI, 1904/05, 
pag. 335. 
Dies., On physiologically balanced Solutions. The Bulletin of the College 
of Agriculture, Tokyo, Vol. VII, 1906/08, pag. 395. 
In diesen Abhandlungen finden sich auch weitere Literaturangaben. 
10) Loew, O. u. Honda, S., Über den Einfluß wechselnder Mengen von 
Kalk und Magnesia auf die Entwicklung der Nadelbäume. The Bulletin of the 
College of Agriculture, Tokyo, Vol. II, Nr. 6, 1896; zit. nach Botanisches Central¬ 
blatt 1898, LXXV, pag. 57. 
11 ) Maki, S. and Tanaka, S., Regeneration of overlimed Soil. The 
Bulletin of the College of Agriculture, Tokyo, Vol. VII, 1906/08, pag. 61. 
12) May, D. W., Experimental Study of the Relation of Lime and Magnesia 
to Plant Growth. U. S. Department of Agriculture. Bureau of Plant-Industry, 
Washington 1901, Bull. Nr. 1, pag. 37. 
13) Namikawa, S., On the Lime Factor for Flax and Spinach. The 
Bulletin of the College of Agriculture, Tokyo, Vol. VII, 1906/08, pag. 57. 
14) Sirker, G. N., Topdressing with Magnesium Sulphate. The Bulletin of 
the College of Agriculture, Tokyo, Vol. VII, 1906/08, pag. 6 lß. 
