96 Forestry Quarterly. 



the mountain were quite bare, and marked by a few parched 

 boulders ; then a growth of alder brush, young and seedling 

 spruce for about 60 feet ; then a dense growth of spruce saplings 

 and poles 15 to 20 inches in diameter. Above these stood a dense 

 wall of well grown spruce trees between two and three centuries 

 old. (See sketch.) (It was impossible to make a photograph of 

 these interesting belts of growth owing to the fogs and rains, so 

 that the sketch and notes were the best modes of making a 

 record.) 



The forest record and data available for study from the Puget 

 Sound region to Yakutat Bay are highly instructive, not only to 

 the students of forestry but to those of geology and climatology.* 

 The writer has endeavored to show elsewhere the bearing which 

 this forest advance has upon the problems of climatology, and to 

 follow this data beyond the field of forest record into that in 

 which the time since glacial retreat is estimated in many thou- 

 sands of years and recorded by the subsequent retreat of cascades 

 and falls. But the forester has the opportunity of reading the 

 most recent and yet progressing record, and of laying its lessons 

 before the scientific world. Perhaps there may be localities 

 where the two records overlap, where both the number of gen- 

 erations of trees which have grown upon a given area, and the 

 distance a certain fall has retreated since glacial uncovering took 

 place, may be of record and reasonably legible. 



Marsden Manson. 



* Note. — For an account of a similarly interesting progress of forestation 

 of a moraine in Glacier Bay see " Forests of Alaska," by B. E. Fernow, in 

 Harriman Expedition, Vol. I. — Editor. 



