ILLUSTRATIONS 



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Plate 45 — Barrell: Exposures of Bellevue and Fairmount formations, 



Obio, and Silurian sequence, Ontario 807 



" 46 " Exposures of Silurian, Devonian, and Mississippian in 



Tennessee and Canada 808 



"• 47 — Vaughaw: Artificially and naturally precipitated calcium car- 

 bonate 944 



" 48 " Filamentous algse tbat bore into coral skeletons and 



oolite grain without filamentous algae 944 



Figures 

 Washington : 



Figure 1 — Plan of the crater terrace of Stromboli, August, 1914 



(Washington) 252 



2 — Plan of the crater terrace of Stromboli, April, 1914 (de 



Fiore) 253 



3— Plan of the crater terrace of Stromboli, August, 1912 



(Perret) 254 



4 — Plan of crater terrace of Stromboli, May, 1906 (Wegner) 254 

 5 — Plan of crater terrace of Stromboli, May, 1904 (Ricco) . . 255 

 6 — Plan of crater terrace of Stromboli, November, 1899 



(Arcidiacono) 256 



7 — Plan of crater terrace of Stromboli, November, 1898 



(Arcidiacono) 256 



8 — Sketch of crater terrace of Stromboli, November, 1895 



(Ricco) 257 



9— Plan of crater terrace of Stromboli, October, 1894 (Ber- 



geat) 258 



10— Sketch of crater terrace of Stromboli, October, 1894 



(Bergeat) , 258 



11 — Plan and sketches of crater terrace of Stromboli, July, 



1891 (Ricco and Mercalli) 259 



12— Sketch of crater terrace of Stromboli, March, 1889 (Mer- 

 calli) 260 



13— Sketch of crater terrace of Stromboli, September, 1888 



(Mercalli) 261 



14— Sketch of crater terrace of Stromboli, April, 1874 ( Judd) 262 

 15— Sketch of crater terrace of Stromboli, 1856 (Bornemann) 263 

 16 — Sketch of crater terrace of Stromboli, September, 1830 



(Palsterkamp) 264 



" 17— Sketch of Stromboli, 1788 ( Spallanzani) 266 



Little : 



Figure 1 — Topographic map of the area under discussion 311 



Kindle : 



Figure 1 — Section with disturbed beds between horizontal lami- 

 nated silts, Avon River, Nova Scotia 324 



" 2 — Contorted strata between horizontal thinly laminated 



clays, Avon River, Nova Scotia 325 



