VULCANOl.OGY AND SKLSIlfOLOGY 



I*>,v ('. (r. JkOCKWooi), Jr., 



l^rojttisor of Mat II em a Hex in Ihr ColUfji- of .Vr»r- .!<•)•!<(■>!. f'riiiiclou, X. ./. 



Ill (ioiisequi'iico of the early ]Hiblicatioii of this suimnaiy if has been 

 impossible to make it as full as the author iiad iiiteiKhnl, es|ie(i;iliy w ih 

 respect to foreign publications. In its preparation the t(jll()\vin,u- have 

 been carefully examined, viz: Science^ vols. V, Vi ; Nature, vols. xxxi. 

 XXXII ; American Jimrnal of Science, (il^O vols, xxix, xxx ; Conipics 

 Beiuhts, vols, c, Ci ; La Nature, l.'ith year, vols, i, ii: IjAxtrovniiic, A\\\ 

 year; Neu Jahrbuck filr Mlucralcqie, etc., 18S5; Transactions SrisDio- 

 logical ^Society of Japan, vol. viii; Froceedi tiffn American Association 

 for Advancement of ISciencc, vol. xxxiii. In respect to these the bibli- 

 ography may be regarded as couJi)lete, and all im})ortani articles ;uo 

 noticed in the summary. Other j)eriodicals and books have been con- 

 siilt£d as opportunity offered, but withoui a full examination. The 

 bibliography attached to the present sunnnary also contains some titles 

 which properly should have been included in that of last year, but which 

 had not then come to the author's noti(;e ; and in lil;e niiinner omissions 

 in tlu' i)res('nt list will be sui)plied, so far as ])ossible, in a future issut'. 



The subje(^t -matter will be arranged under tlie following heads: ^ 



Vnlcanologt/. 



Volcanic phenomena of 188.5. 

 Volcanic phenomena of previous years. 

 Causes of volcanic action. 



i:)eismology. 



Earthquakes of 1885. 



Eartlupiake lists of i88'l. 



Kartlupiake catalogues of ])revious years. 



Study of eartli(|u;d<es. 



Seismometry. 



Instruments and tln'ir records. 



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