148 EXPERIMENT STATION" RECORD. 



the size and condition of the trees producing it and by the locality and the 

 type and density of the forest in which the trees grow. 



Of the factors observed the time of collection was the only one which ap- 

 peared to have an influence on the fertility of the seed. The most fertile seed 

 were obtained at the middle of the seeding period. 



Influence of the origin and germinative power of pine seed upon the 

 progeny, G. Scheodee (Deut. Landw. Presse, 39 {1912), Nos. 36, pp. Jf21- 

 .'i23, fig. 1; 31, pp. Jf3T, 438). — A popular summary of European investigations. 



Monograph on the rubber industry in Bolivia, M. V. Ballivian and C. F. 

 PiNiLLA (Monografia de la Industria de la Goma Elastica en Bolivia. Bolivia: 

 Govt., 1912, pp. V+35J,+LXXXIV+III, ph. 9).— This monograph contains gen- 

 eral considerations relative to the geography, climatology, and resources of 

 Bolivia and discusses in detail the rubber industry of the country relative to 

 its history, botany, methods of exploitation, and marketing. A statistical 

 account is given of the industry in the various producing regions of Bolivia 

 and the laws relating to the industi-y are appended. 



Growing a woodlot from seed, J. A. Febguson {Missouri Sta. Circ. 52, pp. 

 139-1 Jf 6, figs. 2). — Popular instructions are given for starting a forest nursery 

 and the establishment of a woodlot on the farm, including tabular data regard- 

 ing the collecting, storing, and planting of tree seeds. 



Results of sand and ravine binding work in Russia {Ezheg. Lies. Dept., 

 1 {1909), pp. 423-.'{94). — ^An account is given of sand and ravine binding work 

 conducted in the Voronezh, Kharkov, Poltava, Saratov, and Samara provinces 

 of Russia. Little attention has been paid to the restoration of ravines thus far. 

 The fixation of sand dunes has been done largely with sand willows and pines. 



Note on the antiseptic treatment of timber in India, with special refer- 

 ence to railway sleepers, R. S. PKtVBSON {Indian Forest Rec, 3 {1912), No. 2, 

 pp. 107, pis. 9, fig. 1). — This note briefly reviews past experiments made in 

 India with special reference to the preservation of railway ties, reports the 

 results of the experiments made at the Imi^erial Forest Research Institute 

 during the past 2 years with a variety of antiseptic solutions, and gives a 

 resume of the work which it is proposed to carry out in the future. 



On wood preservation with fluorids, R. Nowotny {Osterr. Chem. Ztg., 15 

 {1912), No. 8, pp. 100-102). — The author describes some experiments recently 

 started in Austria in the use of bcllit, a new fluorid combination, for the 

 preservation of wooden poles, and gives a progress rejxirt on the comparative 

 tests of zinc fluorid, copper sulphate, and creosote for preserving poles (E. S. R., 

 20, p. 544). The tests were started in 1905 and 1906. 



An inspection of the poles in 1911* indicated that creosote was by far the 

 most efficient preservative and that zinc fluorid was much more efficient than 

 copper sulphate. The cost of creosoted poles, however, was considerably higher 

 than those treated with zinc fluorid. 



The experiments are to be continued. 



How to prolong the life of fence posts, J. A. Fergtison {Missouri Sta. Circ. 

 51, pp. 135-138, fig. 1). — A popular circular discussing various methods of pro- 

 longing the life of fence posts, in which special consideration is given to the 

 use of creosote by the open tank method (E. S. R., 19, p. 150). A simple form 

 of open tank is described. 



DISEASES OF PLANTS. 



Diseases and injuries to cultivated plants in 1909 {Ber. Landw. Rcich- 

 samte Innern, 1911, No. 25, pp. VI II +270). —A summary is given of literature 

 relating to plant diseases and insect pests and their control. 



