124 Forestry Quarterly 



obtained from a district where the soil contained insufficient cal- 

 cium carbonate to affect their growth. Artificial soils were made 

 from sand free from lime, 5 per cent of leaf mold obtained from 

 a beech wood, and varying quantities of calcium carbonate in the 

 form of ground chalk. The soils were placed in specially pre- 

 pared concrete pits, which were similarly situated and all adjoin- 

 ing, and the seedlings, 25 to a pit, were planted at equal distances 

 from one another. The seedlings were planted in March and 

 measured in the following May. Their heights were again 

 taken in the May of the present year. 



The conclusions which can be drawn from the experiments are 

 summarized as follows : 



1) Douglas fir grows well in sandy soil with small amounts 

 of calcium carbonate; 



3) Increasing quantities of calcium carbonate, up to 8 per cent, 

 have a distinct retarding effect on their growth; 



3) Above 8 per cent of calcium carbonate, some factor, whose 



influence has not yet been established, dominates this retarding 



effect of the lime. R. Z. 



Investigation into the Retarding Effect of Lime on the Growth of Conifers. 

 Agricultural Students' Gazette, New Series, Volume XVII, Part 4, July, 1915, 

 pp. 176-8. 



The well-known pencil manufacturers. 



Red Cedar Forest Faber, 40 years ago, planted 15 acres of 



in Germany Juniperus zirgimana near Niirnberg. The 



trees on the outer edge of this successful 



plantation are now 26 feet in height and 7 inches in diameter, the 



interior trees 5 inch, showing a very fair rate of growth. The 



plantation was made on a light sand soil with 3-year-old, twice 



transplanted stock in 3.5 feet spacing. 



Other attempts at introducing the species near Munich and 

 in other severer climate proved a failure, mild climate appear- 

 ing assential. 



Der Zedernwald bei Stein- Niirnberg. Forstwissenschaftliches Centralblatt . 

 June, 1915, pp. 286-7. 



While in Germany mushrooms have al- 



Mushrooms ways played a role in the food supply and 



and are regularly found in the market, the 



Forestry need, created by the war, in making every 



source of food supply more intensely 



available, has directed attention to the possibility of utilizing and 



propagating this vegetable to a greater extent. A number of 



