6 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



1906 (the twelfth year from the seed) averaged 8-6 inches in 

 length when the seed came from an altitude of 1700 feet, whereas 

 it was only 2-3 inches long in the case of the plants raised from 

 seed produced at an elevation of 3750 feet. 



Table III. 



Austrian Experiments with Spnice {Crop 1894) 

 in the Wienerwald. 



In this Table, as in the last, the poor growth in Austria of 

 Swedish spruce is strikingly emphasised. 



So much for spruce. Now let us turn to the principal results 

 obtained with larch. 



The lower part of Table III. shows the height to which eight- 

 year-old larches had attained when raised from seed produced 

 respectively in Silesia and the Alps. Not only were the alpine 

 larches shorter, but they were also less straight, and even at eight 

 years of age they showed a tendency to produce buttress-like 

 outgrowths or ribs. This lack of straightness, and the tendency 

 to throw out buttresses, is thoroughly characteristic of the larch 

 when grown in high alpine localities, and there can be no doubt, 

 from the Austrian experiments, that these characters are also 

 transmitted from the parent tree to its offspring. 



