288 Agricultur. — Angewandte u. technische Botanik. — Nachtrag. 



KEMPTON, H. B., White pine planting in New England. 



(Forestry and Irrigation. VIII. July 1902. p. 288—291. 

 3 figs.) 



Referring to Pinus Strobus. Trelease. 



Shaw, W. R., The improvement of the castor plant. 

 (Bulletin No. 54 Oklahoma Agricultural Experiment Station. 

 June 1902.) 



Referring to Ricinus. Trelease. 



TSUKAM0T0, M., On „Kaki-shibu", a fruit- juice in tech- 

 nical application in Japan. (Bulletin of the College of 

 Agriculture, Tokyo Imp. Univ. Vol. IV. No. 5. p. 329 



—335.) 



The author, under the direction of Prof. 0. Loew, made a 

 study on the chemical properties of „Kaki-shibu", the juice of 

 the unripe fruit of the „Kaki"-tree (Diospyros Kaki L.) This 

 juice is largely used in Japan for the preservation of various 

 materials, such as fish-nets, fish-lines, packing-papers, wooden 

 vessels etc. After describing the chemical treatment, the 

 author concludes that" the technical value of Kaki-shibu is 

 due to its containing a peculiar tannin which in some respects 

 differs from all other kinds of tannin known, since it is 

 insoluble in alcohol and water, and soluble in dilute acid; this 

 tannin becomes insoluble when the volatile acid of the Kaki- 

 shibu evaporates, and the insoluble film thus formed protects 

 fibrous objects against mechanical wear and tear. A partial 

 oxidation in contact with air improves the qualities of the 

 film. This film also diminishes the water absorbing capacity 

 of such fibrous materials as paper and strings, and thus dimi- 

 nishes the chances of attacks from fungi." k. Okamuro. 



Nachtrag. 



Als Mitglieder sind der Gesellschaft beigetreten: 

 Brebner, G., University College Bristol. 



Clinton, G. P. Botanist Agric. Exp. Station New Haven, Conn. 



U. S. A. 

 Schoute, Dr. J. C. Westersingel 22 Groningen. 



La Societe nationale d'horticulture 84 Rue de Grenelle Paris. 

 de France 



Ausgegeben: 9. September 1902. 



Commissions-Verlag: E. J. Brill in Leiden (Holland). 

 Druck von Gebrüder Gott helft, Kgl. Hofbuchdruckerei in Cassel. 



