19171 FORESTBY. 843 



generating gas, ventilation after fumigation, effects of weather conditions on 

 fumigation, the advisability of a fumigation box, cost of fumigation, and pre- 

 cautions. Tables are given showing a large number of ornamentals, including 

 a few tropical and subtropical plants, that have been fumigated by the authors 

 either in greenhouses or in fumigation boxes. The data given include the 

 name of the plant, rate of application, exposure, house temperature, infesta- 

 tion, and results on both plants and insects. The results are for the most part 

 based on the fumigation of commercial houses under commercial conditions. 



FORESTRY. 



A forest census of Alabama by geogrraphical divisions, R. M. Hakpek 

 {Oeol. Survey Ala. Monograph 8, Sup. (1916), pp. 208-214, fiff- 1)- — This paper, 

 which is supplementary to a previous geographical report on Alabama forests 

 (E. S. R.. 29, p. 746), has been noted from another source (E. S. R., 35, p. 748). 



Thirteenth annual report of the state forester [of Massachusetts], F. W. 

 Rane (Ann. Rpt. State Forester Mass., IS (1916), pp. 124, Pls. 6). — This is the 

 usual annual report relative to the administration and management of the state 

 nurseries and forests in Massachusetts, including also accounts of reforestation 

 work, private cooperative forestry work, utilization of forest products, and fire 

 protection work. Information is also given relative to the present status of the 

 chestnut blight and white pine blister rust and the work of suppressing the gipsy 

 and brown-tail moths. 



The present and future of Pennsylvania's forests, S. B. Elliott (Dubois, 

 Penn.: The Penn. Conserv. Assoc, 1916, pp. 28, pis. 6). — A summary of the past 

 and present conditions of Pennsylvania forests, together with measures sug- 

 gested for their restoration and perpetuation. 



Tree planting on agricultural estates and roads, T. W. Bbown (Min. Agr. 

 Egypt, Hort. Sect. Leaflet 11 (1917), pp. 65, pis. 8). — In addition to directions 

 for planting and growing trees descriptions are given of trees found in Egypt. 



The Central Provinces forest manual (Nagpur, India: Govt., 1915, S. ed., pp. 

 XIII-\-SSl). — A manual on the administration of the state forests in the Cen- 

 tral Provinces of India. Part 1 deals with the Indian forest act of 1878 and its 

 application. The succeeding parts deal with the organization of the forest 

 department, constitution of forests, management and working of the forests, 

 and office business. 



Note on an inquiry by the government of India into the relation between 

 forests and atmospheric and soil moisture, in India, M. Hill ( [Indian'\ Forest 

 Bui. SS (1916), pp. 4ij Pl^- 2)- — This paper summarizes the results of inquiries 

 conducted throughout the Provinces of India since 1906. 



Such evidence as is available in India points to the conclusion that the 

 influence of forests probably tends to increase the rainfall, but not in any 

 marked degree. Thus far no satisfactory data have been secured warranting 

 any definite conclusion relative to the influence of forests on the level of the 

 underground water table. In most of the Provinces no serious damage to the 

 flow of rivers had taken place and no great injury had been done to cultivation 

 due to forest denudation. There were several local exceptions to this con- 

 clusion in the Punjab, in Bengal, and to a less extent in eastern Bengal and 

 Assam. 



Seed selection in the cultivation of Hevea brasiliensis, C. Beadle and H. P. 

 Stevens (Roy. Bot. Oard. Kew, Bui. Misc. Inform., No. 1 (1911), pp. 19-24). — 

 In this paper the authors outline a method of procedure for carrying on seed 

 selection investigations with Para rubber. 



