No. 2, March, 1921] FOREST BOTANY AND FORESTRY 115 



ting, but not necessarily improved. Slope types of fir and spruce are best adapted to selec- 

 tion cutting and natural reproduction, and on the bottom lands hardwood types are better 

 suited to clear-cutting and planting. Mixed forests may be converted to pure beech forests 

 or any desirable species by this method. Annual cuttings must be based on the average 

 increment of different age classes and not on annual increment. An age class may produce 

 abnormal increments for short periods, but cuttings based on this would be too heavy for the 

 entire age class. Hater's formula is discussed in its relation to annual and age class incre- 

 ment. — J. V. Hofmann. 



734. Flury, Philipp. Aus dem Gebierte unserer Forsteinrichtung (Schluss). [Divi- 

 sion of Forest Improvement (concluded).] Schweiz. Zeitschr. Forstw. 71: 179-199. 1920.— 

 Cuttings and future yield, based on annual increment, are faulty as shown by permanent 

 growth plots. These plots show wide fluctuation due to weather conditions. Growth was 

 retarded in the dry years of 1904, 1906, 1908, and 1911 and greatly accelerated in the wet years 

 of 1912-1916. Growth classes based on diameter measurement must take the smaller classes 

 into consideration. According to the "M6thode du Controle" where the smallest diameter 

 taken was 18 cm., stands under 40 years old would not be considered. Measurements taken in 

 divisions of 5 cm. are as applicable as those based on 1 cm. and are much simpler. Cuttings 

 based on 6- to 8-year intervals are too frequent, and no doubt 20-year intervals can be taken to 

 better advantage. However, 10-year periods are advantageous in many conditions. Tabu- 

 lations are included to show the relation of various methods of determining increment to the 

 different methods of cutting. The author concludes that the present forest compartments 

 are too large for the most eflBcient management. — J. V. Hofmann. 



785. Ghose, Manmathanath. A neglected source of sugar in Bikar. Agric. Jour. 

 India 15: 32-39. 3 pi. 1920.— See Bot. Absts. 6, Entry 1893. 



786. Gleason, Henry Allan. Some applications of the quadrant method. Bull. Torrey 

 Bot. Club 47: 21-33. 1920.— See Bot. Absts. 6, Entry 1499. 



787. Greig-Smith, R. The germicidal activity of the Eucalyptus oils. Part 2. The action 

 of the oils in aqueous dilutions. Proc. Linn. Soc. New South Wales 44: 311-347. 7 fig. 

 1919.— See Bot. Absts. 7, Entry 1282. 



788. GuiNAUDEAu, Ch. Souvenir de Macedoine de Salonique a la frontiere Bulgaro- 

 Serbe au point de vue forestier et agricole. [Forest and agricultural conditions in Macedonia.] 

 Bull Trimest. Soc. Forest. Franche-Comt6 et Belfort 13: 189-196. 2 fig. 1920.— Throughout 

 most of Macedonia from Saloniki to the Bulgarian-Serbian frontier, trees are scarce, erosion 

 is severe, and agricultural development is poor. Reforestation, restriction of grazing, irri- 

 gation, and the use of modern methods of crop production are needed to develop the very 

 decided agricultural possibilities of this region. West of Vardor, however, is an area which 

 is more densely populated, better forested, and richer from every point of view. Here the 

 development of transportation facilities and the practice of better forestry and better 

 agriculture can make it one of the flourishing parts of Greece and the source of all sorts of 

 valuable products. — S, T. Dana. 



789. GuYOT, Ch. [Rev. of: Huffel, G. La foret sainte de Haguenau en Alsace. [The 

 sacred forest of Haguenau in Alsace.] 164 p. 1920.] Rev. Eaux etForets 58: 167-175. 1920. 

 — This work gives a detailed history of the important forests of Haguenau, the area of which 

 (18,000 hectares) has not changed materially since the Roman occupation. The methods of 

 forest management in use at different times are fully discussed and freely criticized. The 

 modifications introduced by the Germans following the Franco-Prussian war are regarded as 

 particularly unfortunate, and as having undone much of the good previously accomplished 

 by the French, in spite of the fact that the methods developed by the latter since 1843 were 

 too theoretical and complicated. — S. T. Dana. 



