STUDIES IN TOLERANCE OF NEW ENGLAND FOREST TREES 19 

 The data are given in table XL 



TABLE XI LIGHT DATA TAKEN IN THE COLLEGE WOODS BY USE OF CAMERA 



These figures show that during the day a considerable amount of 

 light penetrates to the ground cover, despite the fact that the forest 

 cover eliminates a large percentage. They also show how useless it 

 is to attempt in such a place as a forest to determine available light 

 for seedlings by means of isolated readings. 



The photometer readings for the station near this location for 

 the summer gave an average light value of only .0554 above some 

 small white pines and .0374 below these pines. Table XII displays 

 the average of a large number of readings taken in the natural forests 

 of Pinus strobus or Tsuga near Burlington, together with reproduction 

 statements. 



TABLE XII AVERAGE OF READINGS NEAR BURLINGTON 



The data in table XII show no marked relationship between light 

 intensities and the presence of seedlings. At one station the average 

 reading was only .0069, yet the ground was well covered with seedlings 

 whereas none grew at a nearby station where the light intensity was 

 .0088 or a quarter greater. Seedlings were growing in this woods at 



