150 EXPERIMENT STATION EECORD. [Vol. 41 



mental planting on Haleakala, Maui, show that temperature zone coniferous 

 trees, such as the Jeffrey pine of California, do well at an elevation of 6,700 

 ft., with a height growth in 8 years of 11 ft. and a diameter of 3.5 in. Of 18 

 different Isinds of Eucalyptus trees set out in Nuuanu Valley, the Blackbutt 

 shows up best, with a yield of 4.5 cords per acre after 5 years' growth. 



Report of the forest nurseryman, D. Haughs {[Bien.] Rpt. Bd. Comrs. 

 Agr. and Forestry Hawaii, 1911-18, pp. Jf'^-50). — A brief report for the years 

 1917 and 1918 relative to collection and exchange of seed, trees distributed 

 from the Government nurseries, and miscellaneous work. 



Annual progress report on forest administration in the Presidency of 

 Bengal for the year 1916—17, H. A. Farrington {Rpt. Forest Admm. Bengal, 

 1916-17, pp. II-\-5S-\-Jt). — The usual progress report on the constitution and 

 management of the State forests of Bengal. Detailed data relative to altera- 

 tions in forest areas, forest settlements, forest surveys, working plans, forest 

 protection, silvicultural operations, yields in major and minor forest products, 

 revenue, expenditures, etc., are appended. 



Progress report on forest administration in the Northwest Frontier Prov- 

 ince for the year 1917—18, R. Parnell {Rpt. Forest Admin. Northicest Frontier 

 Prov., 1917-18, pp. 121]+XXI). — A report similar to the above relative to the 

 administration of the State forests in the Northvk^est Frontier Province for 

 1917-18. 



Annual progress report on forest administration in the Province of Bihar 

 and Orissa for the year 1917—18, F. Teaffoed {Ann. Rpt. Forest Admin. Bi- 

 har and Orissa, 1917-18, pp. [()^]). — A report similar to the above relative 

 to the administration of the State forests in the Province of Bihar and Orissa 

 for 1917-18. 



The resources of our colonial forests, H. Boutte^'ille {Bid. Soc. Encour. 

 Indus. Nat. [Paris], 118 {1919), I, No. 2, pp. 258-283).— A report on the extent 

 and economic importance of French colonial forests, including a review of 

 the causes which have thus far prevented their exploitation and recommenda- 

 tions relative to means of promoting a greater utilization of colonial woods. 



Official note on the colonial woods {Bui. Soc. Encour. Indus. Nat. [Paris], 

 118 {1919), I, No. 2, pp. 284-298),— A tabular inventory of exploitable woods 

 of the Ivory Coast and Gabon, Africa, prepared under the direction of the 

 French Colonial Ministry. The woods are grouped into seven different cate- 

 gories, with special reference to European and American woods which they 

 might replace to advantage. Each wood is considered with reference to its 

 botanical and native names, color, texture and general appearance, relative 

 durability, and uses. 



Selection and thinning, A. A. L. Rutgers {Arch. Rubbercult. Nederland. 

 Indie, S {1919), No. 3, pp. 105-115, 119-123, pis. 8).— A summary of a lecture on 

 this subject, in which the author reviews the results of a number of selection 

 and thinning experiments to show the importance of these factors in reducing 

 the cost price of raw rubber. 



The structure of the lactiferous vessel system of Hevea, W. H. Arisz {Arch. 

 Rubbercult. Nederland. Indie, 3 {1919), No. 3, pp. 139-155, figs. 12).— In contra- 

 diction to results which have been obtained by other experimenters the author 

 found that the various concentric layers of latex vessels in the stem are con- 

 nected with each other. The greater number of layers at the base of a tree 

 is caused by the existence of communication layers, and only to a very limited 

 extent is due to a few short layers which are connected with the adjacent 

 layers. The lactiferous vessels of the stem have their continuation in the 

 same way in the main root. The number of lactiferous layers in the lateral 

 branches depend upon the age of the branch. 



