22 FORESTRY [BoT. Absts., Vol. IX, 



149. Erdmann, F. Gedanken iiber Waldwertrechnung. [Forest valuation.] Zeitschr. 

 Forst- u. Jagdw. 52: 146-166. 1920. — A critical disciission of soil value, growing stock value, 

 sale value, expectation value, cost value, and other important subjects of forest valuation. 

 A complete classified list of kinds of value used in forestry is given. — Joseph S. Illick. 



150. EscHERiCH, K. Die Generationen des grossen braunen Riisselkafers (Hylobius 

 abietis). [Generations of the large brown weevil.] Forstwiss. Centralbl. 42: 425-431. 1920. — 

 Investigators in different regions have disagreed as to the length of generation of the weevil, 

 some finding a period of 15 months from egg to imago (2-year generation), others 12 months 

 (1-year generation), and others 3-5 months (2 generations per year). All 3 positions are sup- 

 ported by reliable data. The difference appears to be due to climatic variations. — It is sug- 

 gested that in regulated forests where the cutting is more or less concentrated in space and 

 season the emergence of the beetles is likewise concentrated and more likely to prove harmful 

 than where, as in a virgin stand, the beetles come out at various times through the year. — 

 W. N. Spar hawk. 



151. Falck. Wege zur Kultur der Morchel-Arten. [Methods of cultivating Morels.] 

 Zeitschr. Forst- u. Jagdw. 52 : 312-323. 1920.^ — A plan to raise edible fungi by natural methods 

 within the forest as a companion crop to the wood. — Joseph S. Illick. 



152. Fankhauser, F. von. Aufforstung und Verbauung im Hochgebirge. [Afforestation 

 and terracing in the high mountains.] Schweiz. Zeitschr. Forstw. 72: 11-20. 1921. — The 

 author takes exception to Marti's contention that the high-mountain meadows should be 

 afforested. He states that some of the areas are above the commercial timber line and that 

 the stocking of those areas with trees would cause an endless controversy with the grazing 

 industry. If the mountain lakes were drained and the meadows stocked with forests the 

 construction of numerous terraces and dams would be necessary. The cost of such construc- 

 tion would be prohibitive and the upkeep high. The grass lands afford sufficient protection 

 for ordinary rainfall and the excessive rainfall is rare as are also the cloudbursts or extraordi- 

 nary showers in the mountains. Consequently the protection afforded at present is as good 

 as can be provided. The construction of terraces or dams would not provide for the excep- 

 tional and excessive rainfall, and the resultant damage and danger would be greater. — J. V. 

 Hojmann. 



153. FiNCKENSTEiN, FiNCK VON. Kiinstliche Diingung im Walde. [Artificial fertilizing 

 in forests.] Zeitschr. Forst- u. Jagdw. 52: 342-345. 1920.^ — An experiment was started in 

 1913 in a 60-year old Scotch pine stand developed in an abandoned field. The area was 

 classed as site-quality IV or V for Scotch pine. The object of the experiment was to determine 

 the effect of artificial fertilizer. Some of the demarcated plots were treated with quicklime 

 at the rate of 1780 lbs. per acre; others with carbonate of lime at the rate of 3660 lbs. per acre. 

 At the end of 6 years the limed plots showed a cross-sectional growth of the stems about 6 

 per cent above that of the plots not limed. There was also a perceptible difference in the 

 forest floor cover vegetation on the treated and untreated plots. — Joseph S. Illick. 



154. Flurt, Philipp. Die Fortbildung des sachsischen Forsteinrichtungsverfahren. 

 [The development of the methods of the forest institution of Saxony.] Naturwiss. Zeitschr. 

 Forst- u. Landw. 18: 249-261. 1920.- — A brief, critical review of a few of the more important 

 topics discussed in a recent publication (Tharander Forst. Jahrb. 71: 30-57, 72-89. 1920) 

 under the above title by Dr. Martin. The author criticizes the Saxon method of regulating the ' 

 yield by the use of inflexible yield tables rather than by careful measurements of the timber 

 resources, and contends that forest management must be more or less elastic and not entirely 

 scholastic. It must accommodate itself to all cultural changes, must protect the forest from 

 over-utilization through calculations of the forest resources (capital) and yields based on 

 safe and established principles, and must abandon the idea, rather firmly established in 

 Saxony, that the "calipers" are an unnecessary implement. — /. Roeser. 



