33 



The experiments in Germany are not of a 

 very extended nature. Prussia had, according 

 to Schwappach, 1 in the year 1901 only o - 2 

 hectares, or 0*49 acres, planted with this tree. 

 In Bavaria the planting trials are limited to a few 

 places with a few trees. It thrives everywhere 

 where the indigenous great maple grows, similar 

 methods of raising and testing being suitable. 

 Its enemies are (i) mice (peeling of the cortex at 

 the foot of the stem), (2) deer, (3) the fungus 

 Nectria cinnabarina, (4) frost to a lesser extent. 

 Nowhere in Europe has the sugar maple pro- 

 duced the especially expected bird's-eye maple 

 wood. The reason for the occurrence of this 

 valuable misgrowth, which the great and Norway 

 maple also produce, is still unknown. Whether 

 this abnormity can be made by the continual 

 pruning of the branches on the stem similar to 

 pollarding, as practised in France, must be seen 

 by experimenting. 



4. Betula lenta, L., Red Birch, Black Birch, 



Cherry Birch. 



With this tree species, according to Schwap- 

 pach, 2 20*20 acres had been planted up to 1901 ; 



1 " Ergebnisse der Anbauversuche mit fremdlandischen 

 Holzarten in Preuszen." "Zeitschrift fur Forst- und Jagd- 

 wesen," 1901. 2 L.C., 1901, p. 151. 



C 



