180 FORESTRY [Bot. Absts., Vol. V, 



1352. Jessen, P. P. En Ny Dansk Impraegneringsmetode. [A new Danish staining 

 method called Teakin.] Dansk Skovforenings Tidsskr. 4: 427-445. PI. 2. 1919. — The process 

 consists in pressing different kinds of liquids which contain coloring matter into the wood. 

 These are either inorganic salts or aniline dyes. The color is taken up by the cells of the 

 wood. — J. A. Larsen. 



1353. Judd, C. S. An historical mesquite tree. Sci. Amer. 122: 165, 175. 1 fig. 1920.— 

 Descriptive of the algaroba (Prosopis juliflora), its occurrence in Hawaii, characteristics, 

 uses and propagation. — Chas. H. Otis. 



1354. Kellogg, R. S. The news print paper situation. Amer. Forestry 26: 147. 1920. 



1355. King, H. E. Tree planting in community, a suggested scheme. South African Jour. 

 Indust. 3: 161-163. 1920. 



1356. Kinzel, Wilhelm. Ueber eine neue Methode des Durchfrierens und die damlt 

 erzielten Erfolge bei zahlreichen bisher nicht oder kaum zur Keimung gebrachten Samen. 

 [Concerning a new method of freezing and the results derived with numerous unfertile seed or 

 seed with very low germinative power.] Naturw. Zeitschr. Forst- u. Landw. 17 : 139-142. 1919. 

 — The author discusses the varying results obtained in the artificial treatment of seed either 

 in light at 20° or in the dark under frost conditions. He cites a considerable number of ex- 

 amples. However, it is evident, that some species show little response to the methods hitherto 

 employed. Treatment of seed by frost in conjunction with light has in the past been avoided, 

 because where used, harmful results were obtained. This method, though, is very successful 

 in many cases, and will yet become important in the case of many tree seeds. It cannot be 

 used with seeds rich in chlorophyl, such as Acer and Fraxinus, or with frost sensitive seed, 

 such as beech, hazel-nut, yew and others. — J. Roeser. 



1357. Kirkland, Burt P. Co-operation between national forests and adjacent private 

 lands. Jour. Forestry 18: 120-130. 1920. — To insure continuous forest production and the 

 permanence of wood using industries, the owners of lands in units totaling more than 25,000 

 acres should consider the area as a whole. This would permit of better equipment and per- 

 sonnel, a permanent town-site and the development of practical forestry. Protection is to 

 be paid for on an ownership basis, and the area to be restocked as cut by nature or planting. 

 Careful cutting and trained supervision to follow the entire operation. — E. N. Munns. 



1358. Kirkland, Burt P. Economics of private forestry. Jour. Forestry 18: 214-217. 

 1920. — The misconceptions of those who believe forestry uneconomic are due to misbeliefs 

 in the rights of private property, interest returns and capitalization and taxation. — E. N. 

 Munns. 



1359. Kitchin, P. C. Preliminary report on chemical weed control in coniferous nurseries. 

 Jour. Forestry 18: 157-159. 1920. — Applications of copper sulphate, zinc chloride, and sul- 

 phuric acid to seed beds gave greatly reduced numbers of weeds, especially good were the re- 

 sults from the first two salts. Further work is in progress. — E. N. Munns. 



1360. Knuchel, Hermann von. Zur Praktikantenfrage. [The probation question.] 

 Schweiz. Zeitschr. Forstw. 71 : 69-78. 1920. — A plea for better conditions for the probationer 

 and more democratic relations between academic and applied forestry. The probationer 

 should receive pay and should be allowed to serve under practical foresters on applied forest 

 problems rather than the general system of working as a subordinate, without pay, under an 

 instructor. — The state should encourage students to attend forest schools, but should not 

 subsidize them. Enrollment at the forest schools should be limited to the number of men 

 needed by the state. Foresters must receive better pay and be placed on social equality with 

 other professions such as medicine, etc. — J. V. Hofmann. 



1361. Koehler, Arthur. Identification of mahogany. [Review of several papers.] 

 Jour. Forestry 18: 154-156. 1920. 



