430 JOURNAL OF FORESTRY 



coasts is similar to the same extent as the chmate of the interior regions 

 discussed. Seed of Douglas fir were obtained by Smitt from Bella 

 Coola, British Columbia, and from Portland, Oregon. The report from 

 the Norwegian Vestlandits Experiment Station shows that the seed- 

 lings from the Bella Coola seed survived the first winter while those 

 from Oregon seed did not. The author recommends seed of this 

 species collected on the coast of British Columbia for use in the coast 

 regions of Norway. 



Climatological records appear to show that western yellow pine can 

 be safely introduced into limited areas in the dry interior valleys of 

 southern Norway (precipitation 18-20 inches). Seed, however, should 

 be collected toward the northern limit of its range in British Columbia. 

 It is shown that the climate" of Nicola Lake near the northern limit of 

 the range of this pine is very similar to that of Eidsvold, southern 

 Norway. 



The writer's conclusions are that in introducing exotic species of 

 forest trees into Norway the following merit most careful consider- 

 ation : 



(a) Only such species should be introduced as are superior to the 

 native species for particular purposes and for special reasons. 



(b) The localities selected for the collection of the seed of each 

 species introduced should be on the basis of climatological comparisons 

 between the places where the seed is collected and the places where it 

 is to be used. 



The poor reputation that exotics have for seeding and planting in 

 forestry undertaking and the financial loss that has resulted from their 

 use can in many instances be charged to collecting the seed in wTong 

 localities. 



We cannot hope to modify a species perceptibly by forcing it to grow 

 under a set of conditions different from that of its natural habitat. 

 Before seeds are collected for use in foreign countries we must know 

 how closely the site factors when the seed is collected conform with 

 those where the seed it to be used. J. W. T. 



Chcrnlstry of Pidh and Paper Maki)ig. By Edwin Sutermeister. 

 New York: John Wiley and Sons, Inc. 1920. Pp. 4T9. 



Mr. Sutermeister, who is chief chemist of the S. D. Warren Company 

 Paper Mills, has written a simple, straight-forward textbook on the 



