ADDRKSSEb. 



cliff caving and giving way beneath 

 '"^'"^^ them. , 

 c.Tv Mr Dillcr published many geologic 

 papers, among which the best known 

 TEi.Kr, are "Geology of the Lassen Peak 

 District"; "Mount Shasta, a Typical 

 Volcaiio"; "Geologic History o£ Crater 

 STUEE. Lake"; "Topographic Development ot 

 the Klamath Mountains" ; "Tertiary 

 CiTf. Revolution in the Topography of tlie 

 Pacific Coast"; "The Iteseberg, Coos 

 . jBi.m tn p^j.^ orford, Lassen Peak, and 



^Namb Redding Folios"; "Auriferous Gravels 

 in the Weaverville Quadrangle, Cali- 

 5T8EKT fQ,.,jja"; "Auriferous Gravels of the 

 Trinity River Basin, California" ; "Min- 

 . CiTv. ^^^^ Resources of the Grants Pass 

 _ TMTT.-' Quadrangle" ; "Mineral Resources of 

 i Southwestern Oregon"; Placer Mines 



Namf. t,,g Riddles Quadrangle" ; "A Geo- 

 logical Reconnaissance in N<irlinvestern 

 Oregon"; "Guideliook of the Shasta 

 n v. Route" ; "The Educational Series of 

 Rock Specimens Collected and Dis- 

 tributed by the U. S;. Geological 

 Survey"; "Chromic Iron Ore"; "Talc"; 

 "Asbestos"; and many others. He 

 described Lassen Peak as our youngest 

 volcano in 1893, and twenty years later 

 - had the satisfaction of seeing it in 



TEurrn eruption, and he then called it our most 



active volcano. In 1897 he brought out 



1 Namr. the i)roof that the mountain surrounding 

 Crater Lake is all that remains of a 

 huge volcanic cone like Shasta that has 

 cn v collapsed and subsided. 

 ^ , , "5° most persons residing on the 



