22  PUBLICATIONS    OF    IT.    8.    GEOLOGICAL    SURVEY.         [bill.  177. 
Pt.  Ill  (Continued).     Mineral  resources  of  the  United  States,  etc. — Continued. 
Cement,  pp.  881-893. 
Portland  cement,  by  Spencer  B.  Newberry,  pp.  881-888. 
American  rock  cement,  by  Uriah  Cummings,  pp.  889-893. 
Precious  stones,  by  George  F.  Kunz,  pp.  895-926. 
Abrasive  materials,  by  Edward  W.  Parker,  pp.  927-950,  pi.  xiii. 
Corundum  deposits  of  the  southern  Appalachian  region,  by  J.  A. 
Holmes,  pp.  935-943,  pi.  xiii. 
The  manufacture  and  use  of  corundum,  by  Charles  X.  Jenks,  pp. 
943-947. 
Phosphate  rock,  pp.  951-957. 
A  phosphate  prospect  in  Pennsylvania,  by  M.  C.  Ihlseng,  pp.  955-957. 
Sulphur  and  pyrites,  by  Edward  W.  Parker,  pp.  958-977. 
Gypsum,  by  Edward  W.  Parker,  pp.  978-983. 
Salt,  by  Edward  W.  Parker,  pp.  984-997. 
Fluorspar  and  cryolite,  pp.  998-999. 
Mica,  pp.  1000-1003. 
Asbestos,  by  Edward  W.  Parker,  pp.  1004-1006. 
Graphite,  pp.  1007-1010. 
Occurrences  of  graphite  in  the   South,  by  William  M.  Brewer,  pp. 
1008-1010. 
Mineral  paints,  by  Edward  W.  Parker,  pp.  1011-1022. 
Barytes,  by  Edward  W.  Parker,  pp.  1023-1024. 
Mineral  waters,  by  A.  C.  Peale,  pp.  1025-1044. 
Index,  pp.  1045-1058. 
Eighteenth  Annual  Report  of  the  United  States  Geological  Survey 
to  the  Secretary  of  the  Interior  1896-97  Charles  D.  Walcott  Director 
In  five  parts  Part  I. — Director's  report,  including  triangulation  and 
spirit  leveling  [Part  II. — Papers  chiefly  of  a  theoretic  nature;  Part 
III. — Economic  geolog}r;  Part  IV. — Hydrography;  Part  V. — Mineral 
resources  of  the  United  States,  1896  Metallic  products  and  coal  David 
T.  Da}^,  chief  of  division;  Part  V  (Continued). — Mineral  resources  of 
the  United  States,  1896  Nonmetallic  products,  except  coal  David  T. 
Day,  chief  of  division]  [Vignette]  Washington  Government  Print- 
ing Office    1897     [Parts  II  and  III,  1898] 
8°.  5  pts.  in  6  vols.  440  pp.,  4  pis.  and  maps;  v,  653  pp.,  105  pis.  and  maps;  v,  861 
pp.,  118  pis.  and  maps;  x,  756  pp.,  102  pis.  and  maps;  xii,  642  pp.,  1  pi. ;  643-1400  pp. 
Bound  in  dark  maroon  cloth  (Survey  edition).  Separates  of  the  various  papers  were 
issued,  in  paper  covers. 
Pt.      I.  Director's  report,  including  triangulation  and  spirit  leveling.     440  pp., 
4  pis.  and  maps. 
Report  of  the  Director,  pp.  1-130,  pis.  i,  ii  (maps  in  pocket). 
Triangulation  ancj  spirit  leveling,  by  H.  M.  Wilson,  J.  H.  Renshawe,  E.  M. 
Douglas,  and  R.  U.  Goode,  pp.  131-422,  pis.  iii,  iv. 
Index,  pp.  423-440. 
Pt.    II.  Papers  chiefly  of  a  theoretic  nature,     v,  653  pp.,  105  pis.  and  maps. 
The  Triassic  formation  of  Connecticut,  by  William  M.  Davis,  pp.  1-192, 
pis.  i-xx. 
Geology  of  the  Edwards  Plateau  and  Rio  Grande  Plain  adjacent  to  Austin 
and  San  Antonio,  Texas,  with  reference  to  the  occurrence  of  under- 
ground waters,  by  Robert  T.  Hill  and  T.  Way  land  Vaughan,  pp.  193- 
321,  pis.  xxi-lxiv. 
