No. 3, October, 1921] FORESTRY 193 



These studies are necessary in addition to fundamental research, because tine long period re- 

 quired to grow timber and the great diversity of conditions require the gradual accumulation of 

 the results of actual experience by many investigators, and their results must be expressed in the 

 same terms and must be comparable. The investigator must work in the forest and in closest 

 touch with practitioners, because it is as important that the scientific principles be applied 

 in actual practice as it is to discover the principles. It is desirable that the research institu- 

 tion be responsible for the economic management of a demonstration forest, since this will 

 help to keep science and practice closely tied together. — W. N . Sparhawk. 



1245. Holm, C. J. Et Forsog med fremmede Lovtraer. [Experiments with exotic decidu- 

 ous trees.] Forst. Forsogsv. Danmark 5: 293-300. 1920. — Experimental plantations 

 were begun on Seeland, Denmark, in 1912. The species most extensively tried were Quercus 

 rubra, Q. palustris, and Betula odorata. Tests were also made of Quercus coccinea, Betula 

 lutea, D. Maximounczii, Acer hegundo, Fraxinus americana, Ceridiphyllum japonicum, 

 Acanthopanax ricinifolium, and Alhizzia Julibrissin. The precipitation approaches 2 inches 

 per month in June, July, and August; April has 8 and May 1 days of frost. The results are 

 discouraging. The oaks suffered heavily from spring frost and are practically all dead; 

 Betula lutea, Acer Negundo, and Fraxinus americana are failures, but Betula odorata and 

 B. Maximowiczii are very promising. — J. A. Larsen. 



1246. HoNLiNGER, H. Zum Methodenstreit in der forstlichenStatik. [On the controversy 

 over methods of forest statics.] Centralbl. Gesam. Forstw. 46: 100-111, 144-151. 1920.— 

 The author concerns himself chiefly with a refutation of Dr. Neubauer's conception of the 

 theory of highest interest on capital value of the forest (Reinertragslehre), which appeared 

 in the above journal for 1918. The forest finance and mathematics of valuation formulae 

 are analyzed in detail to prove the author's position. — R. H. Weidman. 



1247. HuTTANUS. Waldverwxistung. [Forest destruction.] Deutsch. Forstzeitg. 36: 

 157, 159. 1921. — Most of the forests near Cologne are in private hands, and practically all 

 are being laid waste, with no provision for a future stand. Only strict state control of cuttings 

 can save what remains. — W. N. Sparhawk. 



1248. JoLTET, A. Repeuplement artificiel dans une station de friche aprds exploitation & 

 blanc 6toc d'un peuplement de pin noir. [Artificial reforestation after clear cutting of black 

 pine.] Bull. Trimest. Soc. Forest. Franche-Comt6 et Belfort 13 : 273-277. 1920.— Black pine 

 is better adapted than any other species to thin-soiled, calcareous wastes at low altitudes 

 in eastern and northeastern France. Natural regeneration is, however, very difficult, and 

 aritificial regeneration after each rotation very expensive. It is therefore suggested that clear 

 cuttings, which are usually resorted to, be followed by the planting of Douglas fir (green 

 variety), hornbeam, and black locust, with an occasional sj'camore maple. Planting holes 

 should be made in rows 1.5 m. apart each way. A Douglas fir should be planted in every 

 6th hole in every 6th row, — about 120 per hectare. In each of the other holes should be planted 

 a tuft of 4 trees composed of 2 hornbeams and 2 locusts. A stand of this sort is well adapted to 

 the site and will perpetuate itself indefinitely by a combination of sprouts and seedlings. — 

 S. T. Dana. 



1249. JuDD, C. S. Report of the Superintendent of Forestry. Rept. Bd. Commissioners 

 Agric. and Forest. Hawaii 1919-1920: 19-45. PL 1-12. 1921.— Emphasis is laid on the neces- 

 sity of forest protection and forest extension (total of 71,641 trees of 37 species transplanted 

 to 11 forest reserves throughout the Islands); methods of reducing fire menace; and Arbor 

 Day activities. — /. M. Westgate. 



1250. KiERULF, T. Fra en skogtur i Normandie og litt om de Franske bogeskoge. [A 

 trip to Normandy and a little about the French beech forests.] Tidsskr. Skogbr. 29: 10-22. 

 PL 1-7., fig. 1. 1921. — The author presents a description of a 10,607 hectare beech and oak 

 forest at Lyons, near Rouen, France, including silviculture and management. — /. A. Larsen. 



