110 FOREST BOTANY AND FORESTRY [Box. Absts., Vol. VII, 



745. Anonyimous. Forestry, tree diseases and timber. [Rev. of: Da vies, J. H. A map 

 of the world (on Mercator's projection), having special reference to forest regions and the geo- 

 graphical distribution of timber trees. Timber map, No. 1. North America, timber map, 

 No. 2. South America, timber map, No. 3. Europe and Africa, timber map. No. 4. Each on 

 rollers 40 x 30 in. W. and A. K. Johnston : Edinburgh. Macmillan and Co. : London. No 

 date.] Nature 105: 579. 1920. — Distribution of a number is incorrect, and names are 

 erroneous or confusing. European larch does not occur, as shown, in the Pyrenees, Apen- 

 nines, Serbia, Bulgaria, etc. Larix dahurica should be L. sihirica. L. leptolepis is repre- 

 sented on Hokkaido where there is no larch, and in Manchuria and Korea where the finest 

 L. dahurica grows. — 0. A. Stevens. 



746. AxoNYMous. Forestry, tree diseases and timber. [Rev. of: Rankin, W. H. Man- 

 ual of tree diseases. XX + 398 p. Macmillan and Co.: New York and London, 1918.] 

 Nature 105: 579. 1920.— See Bot. Absts. 7, Entry 1168. 



747. Anonymous. [German rev. of: Reuss. 37-jahrige Fichtenreinzuchtversuche in 

 Osterreich. (37-year experiment in pure breeding of pine trees in Austria.) Centralbl. 

 Gesammte Forstw. 1916:383-417. 1916.] Zeitschr. Pflanzenziicht. 6:194. Dec, 1918.— 

 See Bot. Absts. 6, Entry 1607. 



748. Anonymous. [German rev. of: Urban, J. Uber die Grosse der Stecklinge. (On 

 the size of cuttings.) Zeitscht. Zuckerindust. Bohmen 42 : 521-526. 1918.] Zeitschr. Pflan- 

 zenzucht. 6: 195-196. Dec, 1918.— See Bot. Absts. 6, Entry 1612. 



749. Anonymous. El mezquite. [Mesquite.] Agric Mexicano y Hogar 36: 105-108. 

 1920. — Translated and adapted from the Scientific American. 



750. Anonymous. Le pin sylvestre. [The Scotch pine.] Rev. Eaux et Forets 58: 161- 

 162. 1920. — Artificial reforestation of Scotch pine can be largely or perhaps wholly avoided 

 by the clear cutting of long narrow strips, lying at right angles to the direction of the pre- 

 vailing winds. For example, a stand with a rotation of 60 years might be divided into six 

 groups, arranged in two tiers and each containing ten cutting areas or strips. The first 

 year the strip in Group 1 lying farthest from the source of the prevailing winds would be 

 cut; the next year the similarly situated strip in Group 2; and so on. Six years would 

 thus elapse between the cutting of adjacent strips in the same group. This should be ample 

 to allow for natural regeneration, which could be still further assured by leaving along roads 

 and the edges of the strips a few seed trees to hold over a second rotation. The system is 

 flexible and can be easily adapted to different rotations and to biennial and triennial cuttings, 

 etc. — S. T. Dana. 



751. Anonymous. Resultats des experiences faites, le 9 juin 1920, dans la foret domaniale 

 de Lamotte-Beuvron (Loir-et-Cher). [Results of experiments in the state forest of Lamotte- 

 Beuvron.] Rev. Eaux et Forets 58: 268-271. 1920. — Stumps can be extracted by the use of 

 explosives at a net cost of about 1.5 francs per stump. The method can be used to advan- 

 tage for the removal of a limited number of stumps, but is too slow and expensive for the 

 clearing of large areas. The latter can be cleared more cheaply (net cost about 75 francs per 

 stump), and satisfactorily by the use of caterpillar tractors, which might also apparently be 

 used to advantage for the felling of standing timber. Holes for the planting of large trees, 

 especially fruit trees, can be prepared by the use of explosive cartridges containing small 

 amounts of mineral fertilizer. — S. T. Dana. 



752. Anonymous. The fruiting of the Ginkgo at Kew. Kew Bull. Misc. Inf. [London] 

 1920: 47-48. 1 fig. 1920.— See Bot. Absts. 6, Entry 1839. 



753. Anonymous. Beschadigungen an Eichen durch Diaporta taleola Tul. [Injury to 

 oak by Diaporta taleola Tul.] Schweiz. Zeitschr. Forstw. 69: 62-63. Frontispiece. 1918.— 

 See Bot. Absts. 6, Entry 1932. 



