1004 jouRNAi, OF Forestry 



The pioneer vegetation throughout the area is most abundant in wet 

 places. The author expressed the opinion that the better survival and 

 growth in the wet places is due to the concentration of salts resulting 

 from evaporation from the free water surface. The ash contains 

 such small amounts of soluble salts necessary for plant life it may be 

 supposed that only when concentrated by evaporation do they occur in 

 amounts sufficient to sustain vigorous growth. 



The distribution of the pioneer vegetation was found to be largely 

 due to the irregularity of seed distribution. The absence of vegetation 

 on undisturbed ash surfaces was due to the fact that the smooth surface 

 afforded no lodgment for the seeds distributed by the high winds of the 

 region. For the most part, the seeds found lodgment in wet places and 

 in depressions, and it was here that most of the pioneer vegetation 

 appeared. Thus in a bear trail over an otherwise denuded flat there 

 was an abundance of herbaceous and perennial plants in each depres- 

 sion made by the bear's feet in walking over the flat. 



In general it appeared that wind erosion was a great detriment to 

 revegetation in wind-swept Katmai Valley, So also revegetation was 

 greatly retarded by shifting streams. Although the instability of the 

 ash soil due to wind and water appeared to overshawod all else in the 

 problem of revegetation, it is recognized that the shifting soils would be 

 quickly stabilized by incoming vegetation were it not for the great de- 

 ficiency in plant nutriments, particularly nitrogen in the ash. If the 

 plants that start were able to grow thriftily the entire valley would be 

 quickly covered with a luxuriant vegetation. The available supply of 

 nitrogen in the soil must be gradually built up through the growth and 

 decay of incoming vegetation. It appears from this paper that a long 

 time must intervene before Katmai Valley will again bear a woody 

 vegetation comparable to the one destroyed by the great eruption of 

 1914. J. W. T. 



Griggs, Robert R. : IX. The Beginnings of Revegetation in Katmai Val- 

 ley. The OMo Journal of Science, Vol XIX, No. 6, pp. 318-342. 



„ , , The comprehensive report of Messrs. Bennett 



Report of the , , ^ . i . 1 • 



^ , -^ , and Long on the plantation competition in cer- 

 Jtidocs Oft the 



^ . tain counties in Great Britain, held in connection 



. . with the Royal Agricultural Society's Show at 



ompe I ton CardifiF,, England, 1919, is worthy the attention 



of American foresters due to the number of American species reported 



upon and the many points brought out relating to timber production 



