50 



issued may, however, remain largely a matter of opinion, but their 

 location within the Valley is, it is believed, detinitely established. 



In conclusion, may I express my appreciation of the helpful spirit 

 in which Dr. Eschkr has attempted to assist in the solution of wiiat 

 is admittedly a very per|)lexing question? I shall hope, moreover, 

 that the necessity which 1 have been under of showing that his 

 thesis does not accord with the facts will not discourage further 

 discussion of the remarkable phenomena of the Eruption of Katmai. 

 For it is my belief that here is presented a unique opportunity to 

 gain an understanding of the phenomena of volcanism ; that there 

 are problems here which, in their ultimate solution, will require 

 the cooperation of many minds approaching them from many differ- 

 ent angles. 



ERRATUM. 



In Prof. Pekklharing's communication: "0?i the Movement of 

 Fepsine, a.s.o." (Proceedings Vol. XXIV, p. 269) to read p. 272, 

 2'"^ line from the top 1 mgr. instead of 0,1 mgr. 



