352 Agricultur etc. — Personalnachrichten. 



Such trees may be expected to yield 1 to 3 Ib. of dry rubber per tree up 

 to their tenth year and much niore in subsequent years. Exceptionally 

 well developed trees have given as much as 12 to 25 Ib. a year without 

 shewing any ill effects er signs of exhaustion. 



The general physical and chemical properties of latex are briefly 

 touched upon and analyses quoted of that derived from the plant under 

 discussion. The production of rubber from latex is fully discussed, and 

 the various methods and machines employed are described, ad also the 

 purification, vulcanisation and uses of rubber. 



The commercial varieties of Para rubber are enumerated, their 

 preparation described, and comparative chemical analyses given of 

 various kinds of plantation rubber from Ceylon and the Strait 

 Settlements. 



The recently established value of the seeds of Hevea brasiliensis 

 as a source of oil is pointed out as also the possible use of the residual 

 cake as a feeding stuff. The methods of transporting the seeds in a 

 living condition are discussed; the best results appear to have been 

 obtained by packing them in powdered charcoal and sawdust in sealed 

 tins. The use of Wardian cases is however still the most satisfactory 

 method. A chapter is devoted to the diseases of the plant_, and an ap- 

 pendix contains estimates supplied by planters of the cost of planting 

 rubber in Ceylon. W G. Freeman. 



Verliehen: Prof. Dr. C. Fruwirth in Hohenheim der 

 Ritterorden der kgl. württemb. Krone. 



Ernannt: Privatdocent Dr. Alfred James Ewart in Bir- 

 mingham Zinn Professor der Botanik an der Univ^ersität 

 Melbourne. 



Gewählt: Sir William Thiselton-Dyer zum Mitglied der 

 American Philosophical Society. — Dr. N. L. Britton, Director 

 des New-Yorker botanischen Gartens, zum Präsidenten der 

 New York Academy of Sciences. 



L'Academie des Sciences (Institut de France) a decerne 

 le Prix Thore (1905), ä M. le Prof. Dr. Gy. de Istvänffi, 

 Directeur de I'Institut Central Ampelologique Roy. Hongr. 

 (Budapest), pour son travail „Etudes microbiologiques et 

 mycologiques sur le rot-gris de la Vigne (Botrytis cinerea, 

 Sclerotinia Faclzeliana)'\ paru dans les Annales de I'Institut 

 Central Ampelologique (Tome III. 4. 1905. p. 183—360. 

 PI. XIV— XXI). 



Der vor kurzem verstorbene Dr. J. K. H. Brumund in 



Meerssen hat dem Niederländischen Botanischen Verein eine 

 Summe von 30000 Gulden legatirt zur Förderung botanischer 

 Untersuchungen. 



Ausgegeben: 3. April 1906. 



Verlag von Gustav Fischer in Jena. 

 Druck von Gebrüder Gottüelft, Kgl. Hofbuchdrucker in Cassel. 



