March, 1920] FORESTRY 83 



5G7. Reed, Geor<;i; M. Phytopathological survey of the trees and shrubs of Prospect Park 

 and the Botanic Garden (Brooklyn). II. Report of the second season's work. Brooklyn Bot. 

 Gard. Reo. 7: 14-23. 191(1.— Sect. Bo Absts. 3, Entry 785. 



568. Richardson, 11. \Y. The northeastern Minnesota forest fires of October 12, 1918. 

 Geog. Rev. 7: 220-232. Figs. 1-5. April [May], 1919. 



569. Rowlee, \V. W. Synopsis of the genus Ochroma, with descriptions of new species. 

 Jour. Washington [D. C.] Acad. Sci. 9: 157-197. 1919.— See Bot. Absts. 3, Entry 1835. 



570. SCHWAB, W. G. The forests of Dickenson County, Virginia. Office of the State 

 Forester, Bull. 17. 16 p., 6 pi., 1 folded map. 1917. 



571. Schwab, W. G. The forests of Buchanan County, Virginia. Office of the State 

 Forester, Bull. 16. 20 p., pi. 2-8, 1 folded map. 1918. [Reprinted from Virginia Geol. Surv. 

 Bull. 18.] 



572. Sporri, Ed. Zur Griindung von Staatswaldbesitz im Kanton Zug. [Reason for state 



forests in the Canton Zug.] Schweiz. Zeitschr. Forstw. 70: 41-43. 1919 While state control 



of all industries tends to eliminate individual initiative, the control of industries which are 

 vital to the state is necessary. The forest industry falls in the latter class, and the experience 

 of other cantons led to purchase of forests in Zug in 1915 and 1916, and additions later. To 

 date 92 hectares have been purchased, of which about 40 per cent is timbered land. The state 

 control of forest will build up a state industry for the community where private control would 

 not. — All European states own forests, and government control is receiving more and more 

 attention in the United States on account of the destruction of the forests by private owners. 

 — J . V. Hofmann. 



573. Stecher. Bucheckernernte 1918. [Beechnut harvest of 1918.] Deutsch. Forstzeitg. 

 34: 32-33. 1919. — Describes gathering of beechnuts in Cassel-Reinhardtswald. One village of 

 800 people gathered more than 400 centner (44,000 pounds). The nuts are used for food, being 

 especially valuable under conditions existing at the time on account of their high oil content. 

 Prices were as high as 150 marks per centner ($0.32 per pound). One hectaliter of fresh, dry 

 nuts weighs 1 centner; after 10 days in a warm room there is a loss of weight of 11 kgm. and 

 when completely dry a further loss of 2.5 kgm. With crude hand presses the nuts yield 14 per 

 cent of their weight as oil. — W. N. Sparhawk. 



574. Sudworth, Geo. B. [Rev. of: Pearson, R. S. Note on the preparation of turpen- 

 tine, rosin, and gum from Boswellia serrata. Indian Forest Rec. 6:303-345. 1918.] Jour. 

 Forestry 17:322-325. 1919. 



575. Taylor, N. Effects of, the severe winter (1917-18) on the woody plants of the 

 Garden. Brooklyn Bot. Gard. Rec. 7: 83-87. 1918. 



576. Taylor, W. M. The ailanthus-tree [Ailanthus glandulosa] for woodpulp. New Zeal* 

 land Jour. Agric. 18: 223. April 21, 1919.— Comment is made on an article by V. Fedele 

 (Monthly Bull. Agric. Intell. and Plant Dis. [Roma]). This tree, commonly known as "tree 

 of heaven," has many qualities which fit it for pulp production. It is readily propagated by 

 root cuttings and transplants well at any age. The growth is rapid, and it has the remark- 

 able habit of making its strongest growth after pollarding. It is said that an acre of trees 

 will yield approximately 25 tons of wood every third year. It thrives very well on every site 

 in New Zealand, even on arid or very rocky soils. The wood yields 44 per cent of easily 

 bleached cellulose, from which paper pulp can be made. Altogether it is considered a tree of 

 great promise for the New Zealand paper industry. — E. R. Hodson. 



577. Taylor, W. H. Shelter belts. New Zealand Jour. Agric. 18:165. 1919.— This 

 article deals with protective planting for orchards and states that quickness of growth is the 

 chief consideration while the kind of trees obtainable is a secondary consideration. The 



