548 EXPERIMENT STATION EECORD. [Vol.37 



best results from the standpoint of germination were secured by storing the 

 seeds in closed but unsealed fruit jars placed in an ice box. 



Evergreen trees for Iowa, G. B. MacDonald (Iowa Sta. Bui. 170 (19/7), pp. 

 Sl-59, figs. SI; abridged ed., pp. 16, figs. 7). — This bulletin lists the most de- 

 sirable evergreens to be used in Iowa for shelter belts, windbreaks, and orna- 

 mental planting, and gives brief descriptions of their characteristics and value 

 for various purposes, as well as methods of planting and growing. 



The structure and identification of Queensland woods, N. W. Jolly {Dept. 

 Pub. Lands, Queensland, Forestry Bui. 1 {1917), pp. H, pis. 5). — A descriptive 

 account of the wood structure, with illustrations, of some 45 species of the more 

 common trees of Queensland. 



Utilization of ash, W. D. Stebeett (U. S. Dept. Agr. Bui. 52S (.1917), pp. 52, 

 pis. 10, figs. S). — This bulletin discusses the value of ash for different uses, 

 gives the amount of the different species of ash used in various industries, and 

 indicates methods by which owners may utilize their ash timber profitably. 

 An account is also given of the properties of ash wood, including results of 

 tests conducted by J. A. Newlin with different species. 



Grass trees: An investigation of their economic products, J. C. Babl (S% 

 Aust. Dept. Chem. Bui. 6 (1917), pp. 19, pis. 5). — A study of the grass trees, 

 blackboys, or yackas (Xanthorrhosa spp.) of South Australia, with special 

 reference to their botany, distribution, and exploitation for resin. A short 

 chemical study of the resin extracted is Included. 



Note on Indian svunac (Rhus cotinus), Puran Singh ([Indian] Forest Bui. 

 SI (1916), pp. 12). — The author calls attention to the po.ssibility of using the 

 Indian sumac (R. cotinus) as a source of tannin, and gives an account of the 

 cultivation, preparation, and quality of European sumacs (Rhus spp.) for this 

 purpose. 



Notes on Funtumia elastica and Funtumia hybrids. Mint (Bui. Agr. Congo 

 Beige, 7 (1916). No. S-4, pp. 2^6-267, figs. 7^).— This comprises notes and obser- 

 vations on the growth and rubber-yielding value of F. elastica and other Fun- 

 tumia hybrids as observed in plantations In the oriental Province of Belgian 

 Kongo, 



Investigations on the mechanism of the cicatrization of tapping wounds 

 among rubber-yielding plants, F. Hetm (Bui. Off. Colon. [France], 19 (1917), 

 No. 110-111. pp. 95-102, pi. 1). — The autlior here summarizes the results of 

 studies conducted by J. Maheu relative to the healing of wounds and develop- 

 ment of new latex-yielding ducts among African rubber plants. The text is 

 accompanied by a number of figures sliowing the process of cicatrization. The 

 results show, in brief, that the tapping operation should consist in making 

 numerous small wounds rather than large wide wounds inasmuch as abnormal 

 growths are apt to occur on the latter wounds, thereby interfering with the 

 reestablishment of the latex ducts. 



Economic forest products, R. S. Peakson (Ann. Rpt. Bd. Sci. Adtnce India, 

 1915-16, pp. 1S0-1S7). — A report of investigations conducted by the forest 

 service of India with economic forest products, including a list of publications 

 relating thereto published during 1915-16. 



Marketing woodlot products in Tennessee. W. D. Sterrett (Resources 

 Tenn., 7 (1917), No. S, pp. 111-195, figs. 19). — Information is given relative to 

 the woodlot regions of the State; native tree species and their uses; available 

 markets, classed both by products and by species; lumber and log values; best 

 methods of estimating and marketing various woodlot products ; and the care 

 of cut woodlot products. A directory of wood-using firms Is included. 



