432  PRE-CAMBRIAN    ROCKS    OF    NORTH    AMERICA.  [bult,86. 
47  Views  on  the  Eozoonal  Limestone  of  Eastern  Massachusetts,  L.  S.  Burbank. 
Ibid.,  vol.  xiv,  pp.  190-198.     See  also  pp.  199-204. 
48Notes  on  the  Geology  of  Eastern  Massachusetts,  W.  W.  Dodge.  Ibid.,  vol.  xvn, 
pp.  388-419.     See  also,  Ibid.,  vol.  xxi,  pp.  197-215. 
49Report  on  the  Geological  Map  of  Massachusetts,  W.  O.  Crosby.  Boston,  1876, 
pp.  42. 
50 Geology  of  the  Nashua  Valley,  L.  S.  Burbank.  Report  on  the  Geological  Map  of 
Massachusetts,  W.  O   Crosby.     Boston,  1876,  pp.  43-52. 
61  Note  on  the  Helderberg  Formation  of  Bernardston,  Massachusetts,  and  Vernon, 
Vermont,  James  D.  Dana.  Am.  Jour.  Sci.,  3d  ser.,  vol.  xiv,  pp.  379-387.  See,  also, 
On  the  Relations  of  the  Geology  of  Vermont  to  that  of  Berkshire.  Ibid.,  vol.  xiv, 
pp.  37-48,  132-140,  202-207,  257-264. 
52 On  the  Classification  of  Rocks,  M.  E.  Wadsworth.  Bull.  Mus.  Comp.  Zool.,  vol. 
v,  pp.  275-287. 
•"Contributions  to  the  Geology  of  Eastern  Massachusetts,  William  O.  Crosby,  pp. 
286,  with  a  map. 
54The  Felsitcs  and  the  Associated  Rocks  north  of  Boston,  J.  S.  Diller.  Bull.  Mus. 
Comp.  Zool.,  Harvard,  vol.  vn,  pp.  165-180. 
55 On  the  Relation  of  the  Quincy  Granite  to  the  Primordial  Argillito  of  Braintree, 
Massachusetts,  M.  E.  Wadsworth.  Proc.  Bost.  Soc.  Nat.  Hist.,  vol.  xxi,  1880-1882, 
pp.  274-277. 
56 On  the  Trachyte  of  Marblehead  Neck,  Massachusetts,  M.  E.  Wadsworth.  Ibid., 
pp.  288-294. 
67The  Argillite  and  Conglomerate  of  the  Boston  Basin,  M.  E.  Wadsworth.  Ibid., 
vol.  xxn,  pp.  130-133. 
58 Note  on  a  fossil  coal  plant  found  at  the  graphite  deposit  in  mica-schist,  at  Wor- 
cester, Massachusetts,  Joseph  H.  Perry.  Am.  Jour.  Sci.,  3d  ser.,  vol.  xxix,  pp.  157- 
158. 
69  On  the  Geology  at  Great  Barrington,  Massachusetts,  Alexis  A.  Julien.  Trans. 
New  York  Acad.  Sci.,  vol,  vn,  pp.  21-39. 
60  Geology  of  Hampshire  County,  Massachusetts,  B.  K.  Emerson.  Gazctcer  of 
Hampshire  County,  Massachusetts,  1654-1887.  Edited  by  W.  B.  Gay,  Syracuse,  New 
York ;  pp.  10-22. 
61  Relations  of  the  Conglomerate  and  Slate  in  the  Boston  Basin,  W.  O.  Crosby. 
Proc.  Bost.  Soc.  Nat.  Hist.,  vol.  xxm,  1884-1888,  pp.  7-27. 
63  The  Geology  of  Cape  Ann,  Massachusetts,  Nathaniel  Southgate  Shaler.  Ninth 
Ann.  Rept.  U.  S.  Geo!.  Survey,  1887-?88,  pp.  529-611;  with  plates. 
6:5  A  description  of  the  " Bernardston  Series"  of  Metamorphic  Upper  Devonian 
Rocks,  Ben  K.  Emerson.     Am.  Jour.  Sci.,  3d  ser.,  vol.  xl,  1890,  pp.  263-275,  362-374. 
w  Porphyritic  and  Gneissoid  Granites  in  Massachusetts,  B.  K.  Emerson.  Bull.  Geol. 
Soc.  Am.,  vol.  i,  pp.  559-561,  (abstract). 
'"The  Relation  of  Secular  Rock  Disintegration  to  certain  Transitional  Crystalline- 
Schists,  Raphael  Pumpelly.     Ibid.,  vol  n,  pp.  209-224. 
^Geology  of  the  Green  Mountains  in  Massachn setts,  by  Raphael  Pumpelly,  J.  E. 
Wolff,  T.  Nelson  Dale,  and  Bayard  T.  Putnam,  Part  1 ;  submitted  in  1889.  General 
Structure  and  Correlation,  Raphael  Pumpelly. 
«7  Geology  of  Hoosac  Mountain,  J,  E.  Wolff.     Ibid.,  Part  2;  submitted  in  1889. 
fi8  Mount  Greylock :  Its  Structural  and  Areal  Geology,  T.  Nelson  Dale.  Ibid.  Part  3; 
submitted  in  1889.  See  also  The  Greylock  S^nclinorium.  Am.  Geol.,  vol.  viii,  1891, 
pp.  1-7. 
69  Report  on  the  Geological  and  Agricultural  Survey  of  the  State  of  Rhode  Island, 
Charles  T.  Jackson.     Providence,  1840,  pp.  viii,  312 ;  map  and  plate. 
70  A  Geological  History  of  Manhattan  or  New  York  Island,  Issachar  Cozzens,  jr. 
New  York,  1843,  pp.114;  with  map  and  sections. 
71  On  the  origin  of  flattened  and  contorted  pebbles  in  rocks  of  Roxbury,  Newport, 
