88 forestry Quarterly 



account of the procedure illustrated by curves is followed by a 

 summary of results. 



1. The percentage of light colored seed in a sample from the 

 northern field (10.56 per cent.) was twice as large as in the sample 

 from the southern field (5.13 per cent.). 



2. The weight of a thousand seeds of light color was in the aver- 

 age 17 per cent, lighter than that of dark seeds, and lost its weight 

 more rapidly by keeping than the dark seeds. 



3. Light colored seeds germinate in the dark more slowly than 

 dark seed except when placed under blue light, when the progress 

 was alike ; and after a year's storage it germinated imder blue light 

 even much more rapidly than the dark. The deduction from this 

 behavior is that the after-ripening is more slowly accomplished 

 in the light colored seed. 



The hypothesis is ventured, that light color is an adaptation to 

 light conditions in northern latitudes and in dense shade of stands, 

 dark seed the adaptation to open sunny stands and southern lati- 

 tude. 



Studien fiber die Vielfarhigkeit von Schwarzkiefernsamenkornern. Central- 

 blatt fur das gesammte Forstwesen, May, June, 1914, pp. 185-202. 



A study and experimentation through 



Value of many years on the behavior of the European 



Geographical larch from the Alps and from the Sudetic 



Varieties Mountains (Silesia, Bohemia and Saxony) 



by Dr. A. Cieslar fiunishes striking evidence 



of the importance of seed supply for planting. The same species 



develops in these climatically different regions quite differently, 



and its progeny shows in a more than 24-year planting trial an 



inheritance of the characteristic differences in heightgrowth, 



shaft and crown form, bark, leaf period, weight of wood and in 



silvicultural directions. 



A detail description of the plantings and investigations and their 

 result is given. The resume is as follows : 



1. The larch from the Sudetic Mountains is more tolerant than 

 that of the Alps; it can therefore be grown in denser stand, pro- 

 tects the soil better and can maintain itself in mixture with tolerant 

 species — this especially because 



2. It is more rapid in heightgrowth (up to the twenty-seventh 

 year at least) by 20 per cent. 



