206 FORESTRY [Bot. Absts. 



Legislation, Forest ranging and timber inspecting, Plantation and nursery work, Forest 

 apprentices, the Timber industry, Firewood permits, Shipbuilding, Revenue and expendi- 

 ture, Botanical, Tanbarks, Sandalwood and sandalwood oil." In the jarrah country in the 

 Southwest Division, the area of virgin forest was found to be exceedingly small. During the 

 war the timber industry was very much depressed due to the shortage of ships. The report 

 is appended by detailed tabulations of revenue and expenditure, timber and timber industry 

 statistics, a list of herbarium specimens collected and identified and a list of trees planted at 

 the Hamel State Nursery during the 6-month period.— C. F. Korstian. 



1451. Leavitt, Clyde. Some aspects of silvical research as an after-the-war activity. 

 Jour. Forestry 17: 273-280. 1919. — A plea is made for greatly increased silvical investigative 

 work in the East, as the U. S. A. Government has established forest experiment stations in the 

 West and none in the East. This work is not possible at present but needs federal aid to the 

 states, so that educational centers and state foresters may be able to do intensive work. — 

 E. N. Munns. 



1452. Long, Frances Louise. The quantitative determination of photosynthetic activity 

 in plants. Physiol. Res. 2: 277-300. June, 1919.— Method for comparing net photosynthetic 

 activity of different varieties under same conditions, or of same variety under different con- 

 ditions. [See Bot. Absts. 3, Entries 2685, 2833; 4, Entry 246.]— B. E. Livingston. 



1453. Lovejoy, P. S. Review of lumber industry affairs. Jour. Forestry 17: 245-259. 

 1919.— Articles appearing in the lumber trade journals during the last half of 1918 are made 

 the subject of a discussion on the trend of thought regarding conditions in the lumber indus- 

 try. Such topics as the government and the industry, export, census, accounting, and prof- 

 iteering, are included. — E. N. Munns. 



1454. MacCaughey, Vaughan. The mangrove. Amer. Bot. 25: 42. 1919. 



1455. Martin, Dr. H. Die Erhaltung der Buche in Sachsen, inbesondere in gemischten 

 Bestanden. [Conservation of beech forests in Saxony, with especial reference to mixed stands.] 

 Tharandter Forst. Jahrb. 70: 1-32. 1919.— The advantages of mixed stands are discussed in 

 detail with reference to the relatively high role which beech plays in the improvement of the 

 physical factors of site and quality of stand. A plea is made to encourage the conservation 

 of beech forests and the growing of this tree in mixed stands is especially advised. In the 

 current number of the above mentioned periodical the regeneration of beech in pure stands 

 is discussed in accordance with the results of different methods of cutting. Consideration of 

 the regeneration of mixed stands follows in the next number of the journal. — Hermann Krauch. 



1456. Matthews, D. W. Tropical reconnaissance with special reference to work in the 

 Philippines and British North Borneo. Jour. Forestry 17: 371-377. 1919.— Tropical countries 

 have not usually considered their forests as a whole, but have estimated only the amount of 

 timber of certain special use and value. It is estimated that the stand in Borneo averages 

 1803 cubic feet per acre and in the Philippines 2389 cubic feet. How much the tropics will 

 yield is problematical, though this should be able to tide over the timber supply until the 

 temperate regions become more self-sustaining. — E. N. Munns. 



1457. Maxwell, Hu. The uses of wood. Wood used in the cooperage industry. Amer. 

 Forestry 25: 1208-1216. 19 fig. 1919.— Two kinds of cooperage are employed, "tight," in- 

 tended for liquids, and "slack," for dry articles. Red gum leads all other woods for staves 

 in slack cooperage, with pine, beech, elm, maple and cither woods following in the order named. 

 For heading, pine is consumed in twice the amount of any other wood, and beech stands sec- 

 ond, with red gum third. Elm is chiefly used for hoops. White oak is the best "tight"- 

 cooperage wood; the pores or vessels arc plugged by tyloses. The waste of wood in the man- 

 ufacture of "tight" staves in the past has been very great, but utilization now is closer, and 

 material which would have been thrown away formerly is now converted into other products. 

 — Chas. H. Otis, 



