520 Forestry Quarterly 



50 centimeters (19.7 inches) and the average temperattire during 

 the month of July about 19° Centigrade (66° F.) at an average 

 altitude of 1300 (4265.1 feet) meters. Moreover, it is found for 

 the most part at even lower altitudes commencing with 600 

 meters (1968.5 feet). Jolyet argues that, if this species can grow 

 in a coimtry where, at 600 meters (1968.5 feet) altitude, the 

 average temperature for the entire year is 15° Centigrade (59° F.) 

 and 22.5° Centigrade (72.5° F.) for the month of July and the 

 rainfall less than 50 centimeters (19.7 inches), it coiild certainly 

 be introduced commencing with elevations of 200 meters (656.2 

 feet) in all parts of France, except in Corsica where it might be 

 planted beginning with 600 meters (1968.5 feet). 



This speciefe commends itself because it is hardy and moisture 

 resisting. It reaches a total height of more than 50 meters (164 

 feet) and at least 2 meters (6.6 feet) in diameter, breast-high. It 

 makes excellent timber, being heavier than the Norway spruce 

 which has been planted so extensively in Europe. Its sole 

 weakness — slow growth up to 10 or 15 years of age — is probably 

 due, in part, to the greater development of its root system. 



Five specimens, cut in 1913 at Bellefontaine, averaged 11.7 

 meters (38.4 feet) in height at 35 years of age. If grown in 

 suitable mixture with broad-leaf trees, Jolyet recommends the 

 oriental spruce for lower elevations where it might be desirable to 

 propagate conifers on account of the greater proportion of timber 

 which they yield. 



T. S. W., Jr. 



Revue des Eaux et Forlts, May 1, 1916, pp. 129-37. 



A few generally interesting biological data 

 Fighting may be briefed from an article by Seitner on 



Insects and observations during a pine moth pest in the 



Parasites Great Forest near Vienna during 1913-4. 



The use of insect lime at the right time 

 must be considered a thoroughly effective means of combat, in 

 spite of some of the caterpillars wintering on the trunks of trees. 

 The usual reconnaissance for the early discovery of the pest is, 

 of course, essential. 



The experience made elsewhere of the Ichnevmionidae being 

 the most prominent enemies of the pine moth must not be gener- 

 alized. These, at the station mentioned, fell into third place, 

 playing a subordinate rdle, tachinae and sarcophagus species being 



