Agricultur etc. — Angewandte u. techn. Botanik, Methoden. 559 



Fimbristylis aniiua Delta d. Maggia, in einer einzigen Station, 

 in einigen hundert Exemplaren. 



Pflanzen der Grenzzone zwischen Locarno und Roccabella 

 sind: Nasliirtium riparium Gremli, Senecio aquaticus L., Gratiola offi- 

 cinalis, Veronica beccabunga, Ranu.ncn.lus reptans, Litorella lacustris. 

 Agrostis alba v. flagellaris Neilr. f. fluilans Schrot, etc. Ruderal- und 

 Adventivpflanzen der Uferzone: Erucastrum incanum, Nasturtium arnto- 

 ralioides Tuscz., Xanthium Striimarium L., Ruine x conglomeratus und 

 crispus Schleich f. laeve Milde, letztere neu für die Schweiz. 



M. Rikli. 



Anonymous. Wind Breaks or S heiter- Bei ts. I Agricultural 

 News [Imperial Department of Agriculture for the West 

 Indies]. Vol. III. 1904. p. 273—274.) 



Deforestation has rendered protection of estates and native Pro- 

 vision grounds from the wind a necessity in some of the West Indian 

 Islands, especially where crops other than the sugar-cane are culti- 

 vated. Wind breaks help to preserve the Jlowers in such crops as limes, 

 cacao, and coffee, and also to protect lands from drying winds. 



When new land is being opened up strips of forest can be left in 

 suitable positions but on already cleared land trees must be planted. 



Two trees are especially recommended for these purposes in the 

 West Indies, namely, „Galba" (Calophyllum Calaba) and Inga 

 /fl^»7«ö known in Dominica and the French Islands as „Pois doux", 

 in Antigua and Martsewat as „Spanish oak" and in St. Kitt's- 

 Nevis as „Spanish ash". Galba is a quick growing, evergreen tree, 

 capable of withstanding sea winds. In St. Vincent a complete System 

 of wind breaks was arranged on estates given out in allotments under 

 the Land Settlement Scheme, and lines of the total length of 20 miles of 

 Galba have been planted. W. G. Freeman. 



BURKILL, J. H., Annatto dye. (Agricultural Ledger No. 12 of 



1904. p. 177—188.) 



The author gives together with Information of purely economic 

 interest, the present distribution of the two races of Bixa Orellana Linn., 

 which have been introduced into India, and shows that the collection 

 of the seeds for the dye is rapidly being given up. 



J. H. Burkill (Calcutta). 



BURKILL, J. H., The Tapioca plant: its history, culti- 



vation and uses. (Agricultural Ledger No. 10 of 1904. 



p. 123—148.) 



An economic account of Manihot utiliss'una Pohl, (including 

 M. Aipi Pohl.). The present distribution in India is given with other 

 "Information. The tendency of the information gathered together is to 

 show that there is no specific difference between AI. utilissima and AI. 

 Aipi. J. H. Burkill (Calcutta). 



BÜSGEN, JH., Zur Bestimmung der Holz härten. (Ztschr. 

 f. Forst- u. Jagdwesen. 1904. p. 543 — 569.) 



Die Untersuchung der Holzhärte nach Art der Mineralogen, 

 d. h. durch Ritzen mit verschieden harten Mineralien ergiebt 

 für alle Hölzer ungefähr dasselbe Resultat und zwar eine sehr 

 geringe Härte. Zur quantitativen Bestimmung der Holzhärte 

 im Sinne des täglichen Lebens bediente sich der Verf. eines 



