Periodical Literature 143 



The results of these highly interesting expositions are summa- 

 rized in 13 theses, which appear clearly in the text as briefed 

 above. 



Einiges i'lber die Rolle des Lichtes im Walde. Centralblatt fiir das 

 gesaminte Forstwesen. February and March, 1906, pp. 49-73 and 97-122. 



The question whether the seed of poor 

 Heredity trees produces a poor progeny can be an- 



in swered only through experience. Guse 



Seeds. records two stands of pine, one 47 year 



old, another 70 to 75 year old, which orig- 

 inated from seed collected from unthrifty, bushy and crippled 

 seed trees, ' ' Bauernkusseln. ' ' Neither of them showed any signs 

 of crippling, the trees being slender and straight. 



Auf alten Bahnen. Allgemeine Forst- uiid Jagdzeitung. Oct., 1905, p. 



349 



The question of the influence which seed 

 Heredity derived from different localities and con- 



in ditions exerts upon the progeny, is being 



Seeds. studied at the Swiss experiment station. 



Prof. Engler publishes first results on 

 spruce, fir, larch, maple, with seeds from different altitudes, 

 from trees of different age, from straight and crooked or other- 

 wise poorly formed trees and from different diameter classes. 



Regarding the seeds themselves, the following results are 

 stated (compare on same subject the findings of the Swedish 

 station recorded on p. 51 of this volume.) Spruce cones from 

 low and medium elevations are larger and heavier than from high 

 altitudes. No decrease, however, was noted between 500 and i ,400 

 m. Up to that altitude, no influence upon weight and germination 

 of seed could be demonstrated. Seed from higher altitudes 

 lost germinative power more rapidly than those from lower ele- 

 vations. It is then only seed from the higher altitudes that is 

 deficient in quality. These also furnished smaller and lighter 

 plants. The conclusion is reached that the characteristic rapid 

 growth of the spruce from the low altitudes and the slow growth 

 of those in higher altitudes, is inherited by the progeny. But 

 whether this characteristic continues or is outgrown, remains 

 still to be seen. The plants from the low lands show stouter 



