608 Palaeontologie. — Agricultur, Horticultur und Forstbotanik. 



of a rootlet, in tangential view, is here figured, showing the 

 vascufar network, 6 or 7 cells in width, and greatly resembling 

 the termination of the vascular bundles in the ieaf. Between 

 the spirally-thickened cells are found wide thin-walled elements, 

 from which water could readily pass into the spiral elements, 

 and thence through the vascular branch into the stele of the 

 rootlet. Arber (Cambridge). 



Harris, J. T., On the Budding of Nutmegs. (Bulletin of 



the Department of Agriculture, Jamaica. Vol. H. p. 133 



— 134. 1904.) 



The nutmeg tree is dioecious and takes from 7 to 10 years from 

 the seed to flower. For these reasons any method of ensuring the pro- 

 duction of female trees wouid be of considerable economic importance. 

 Grafting seedlings „by approach" was tried, but the lateral shoots of the 

 scions which had to be employed in this method were found to continue 

 their growth „as lateral shoots" and well shaped trees could not be ob- 

 tained. It is now suggested that when the trees in a plantation flower 

 all but about four per cent. of the males should be cut down to within 

 three feet of the ground, and that buds from the vertical shoots springing 

 from the crown of one good female tree previously cut down should be 

 grafted on to them. W. G. Freeman. 



Moore, G. T., Soll Inoculation for Legumes. (U. S. 



Dept. of Agric. Bureau of Plant Industry. Bull. 71. p. 1—72. 



PI. 1 — 10. Jan. 23, 1905.) 



An extended account of the investigation of this problem with de- 

 scriptions of the method of preparation and distribution of the cultures 

 of tfie nodule forming organism. Also graphic illustrations of the effect 

 of soil inoculation on the growth of certain leguminous crops. Cultures 

 which produce the best results are obtained by cultivation on media 

 poor in nitrogen, which stimulates the organism to utilize that of the air. 

 There is but one form of the legume organism, Pseudomonas rcidicola 

 (Beijerinck) Moore, and its relation to its host is to be regarded as 

 purely parasitic, and unless the plant can overcome its action härm re- 

 sults. The host avails itself of the nitrogenous material in the nodules 

 by breaking them down and absorbing it from the parasite. The whole 

 constitues a very complete account of the author's work on this subject. 



H. M. Richards (New York). 



Wright, H., A Report on some Ceylon Timbers. (Cir- 



culars and Agricultural Journal. Royal Botanic Gardens, 



Ceylon. Vol. II. p. 311-338. 1904.) 



This report consists, in the main, of a slightly abridged reprint of 

 a report published in the volume of „Imperial Institute Technical Reports 

 and Scientific Papers", 1903, with some further notes, criticisms and re- 

 marks. The tests of mechanical properties recorded were conducted by 

 Professor Unwin, and Messrs. Ransome and St one investigated the 

 practical working properties of the timbers. Detailed Information is 

 given on twenty two timbers. W. G, Freeman. 



Ausgegeben: 13. Juni 1905. 



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

 Druck von Gebrüder Gotthelft, Kgl. Hofbuchdrucker in Cassel. 



