DARTON.] 



NORTH AMERICAN GEOLOGY. 



623 



Massachusetts — Continued. 



1886. New England Upper Silurian, 



Dale. 

 Holyote trap, Emerson. 

 Iron ores, Putnam. 

 Report of work in division of 



chemistry, Clarke, P. W. 

 Cambrian system, Walcott. 



1887. Succession and structure of crys- 



talline rocks, Emerson. 

 Cutting of gorges through trap 



ridges, Emerson. 

 Lower Silurian fossils from Ta- 



conio, Dana, J. D. 

 Map of United States, Hitchcock, 



C.H. 

 Swamps and terraces, Shaler. 

 Report on Rhode Island, Provi- 

 dence Franklin Soc. 

 Triassic of Connecticut Valley, 



Davis, W. M. 

 Taconic rocks and stratigraphy, 



Dana, J. D. 

 Instruction in investigation, Da- 

 vis, W. M. 

 Taconic system, Walcott. 

 Origin of Triassic monoclinal, 



. Davis, W. M. 

 Swamps of New England, Shaler. 

 Taconic question restated, Hunt, 



T.S. 

 History of crystalline rocks, 



Hunt, T. S. 

 Gay Head, Merrill, F. J. H. 

 Carboniferous plants and rooks, 



Kemp. 

 Connecticut Lake of Champlain 



period, Emerson. 



1888. Introduction deposits of phos- 



phates of lime, Shaler. 



Fishes and plants from Trias, 

 Newberry. 



Fossils in lower Taconic of Em- 

 mons, Walcott. 



Geology at Great Barrington, 

 Julien. 



Geology of Marthas Vineyard, 

 Shaler. 



Geology of outer islands of Bos- 

 ton Harbor, Crosby. 



Geology of vicinity of Salem, 

 Sears. 



Hampshire County, Emerson. 



Taconic at Boston, Hyatt. 



Principles of adversaries of the 

 Taconic, Marcou, J. 



Massachusetts — Continued. 



1888. Cambrian of Bristol, Shaler. 

 Joint structure, Crosby. 

 Relations of conglomerate and 



slate in Boston basin, Crosby. 

 Origin of kames, Shaler. 

 Petrography of dike in Boston 



basin, Hobbs. 



1889. Traps of Connecticut Valley, Da- 



vis and Whittle. 



Horizon of Nahant limestone, 

 Foerste. 



Potholes at Cohasset, Bouv6, 

 Upham. 



Geological recreation. Honey- 

 man. 



Geology of Nahant, Lane. 



Geology of Nantucket, Shaler. 



Contour map, Davis, W. M. 



Structure of drumlins, Upham. 



Conglomerates in gneisses, Hitch- 

 cock, C. H. 



Shells in till near Boston, Up- 

 ham. 



Report — Division of Archean ge- 

 ology, United States Geological 

 Survey, Pumpelly. 



Report — Atlantic Coast division. 

 United States Geological Sur- 

 vey [shore lines. Cretaceous, 

 metamorphic rocks], Shaler. 



Report— Division of coast line 

 geology. United States Geolog- 

 ical Survey, Shaler. 



Report — ^Division Paleozoic in- 

 vertebrates, United States Ge- 

 ological Survey, Walcott. 



Building stone, Merrill, G. P. 



Analyses of sands and clay, Mar- 

 thas Vineyard, Clarke, F. W. ; 

 Riggs. 



1890. Archean axes of eastern North 



America, Dana, J. D. 



Bernardston, series of upper De- 

 vonian, Emerson, Dana, J. D. 



Cretaceous plants, Marthas Vine- 

 yard, White, D. ; Newberry. 



Cretaceous fossils, Marthas Vine- 

 yard, Shaler. 



Evidence of till on glacial cli- 

 mate, Crosby. 



Essex County, Sears. 



Excursion in northern Appala- 

 chians, Williams, G. H. 



Gay Head, Clark, W. B. ; MerriU, 

 F..LH.; WardjL.F. 



