VIRGINIA WALCOTT 305 



Page 



Virginia, Tcschenite or analoite-basnlt in 24, 318 



ViRLET d'Aoust, T., cited on mctamorphisiii 28. 378 



VoGT, J. H. L., cited on melting point of minerals 29, 185 



— pre(ii)it;iti()n of barium sulphate 21. 109 



— , Die Silikatsclnnelzosungen, Reference to 21. in2, 175 



Volcanic activit.v. Water and 24, 573-606 



— gases, Attempt to collect 24, 581, 5S:', 



— hygrometric observations, Rrun's 24, 578 



— hyiiotliesis of climatic changes 25, 483 



— islands. Reference by Daly in 27, 326 



— mecliMnism at Stromboli 28, 165 



, Relation of Stromboli to 28. 249 



— observations of Green and Brun, Discussion of . 24. 575 



— Plug, Northumberland (New York) 24, 53, 335, 683 



— • sand type, Description of 21, 629 



— vents, Mesh-like arrangement of 22, 148 



— water, Analyses table of Hawaii 24, 592 



Volcano c'loud, Explanation of the 24, 577 



Volcanoes, Age as the determinant of character in ; D. ('. Curtis 26, 78 



— , Genetic classification of active 21, 23, 768 



— , Hawaiian 21. 22, 767 



— in southern Italy, Saline fumarole deposits of 27, 61 



— of Hawaii, Succession in age of the 23, 747 



southern Italy, Present condition of the; II. S. Washington and 



A. L. Day 26, 105, 375-388 



-^, Some writers on 24. 574 



— , Tectonic lines in Hawaiian 28. 501 



VoN DER LiNTH, A. E., clted on structure of Alps 29, 175 



Voss, E. L., cited on aridity of Ceara, Brazil 22, 206 



Vulcanism and diastrophism. Role of sedimentation in 26. 138 



Vulcano, a. Bergeat, G. Ponte, and O. do Fiore cited on solfataric activ- 

 ity of 26, 384 



— volcano, Italy 26, 384 



w 



Waagen, Evolutionary relationship of mutations of 27, 148 



— , "Mutations" of 25, 142 



Waagens theory of mutations, An illustration of 24, 109 



Wabana iron ores of Newfoundland 25, 74 



— , Newfoundland, Fossil alg.ie of the Ordovician iron ores of 26. 148 



Wade, W. R., cited on allanite 28, 467 



Wadsworth, M. E., cited on augite syenites 27, 208 



— Keweenaw series 27, 94 



Wailes, B. L. C, Geological work in Mississippi of 25. 170 



Walcott, C. D., Albertella fauna 28. 209 



— , Brigliam quartzite named by 21, 523 



— ; Cambrian of western North America 25 130 



XX — Bull. Geol. See. Am. 



