FOR    THE    YEARS    1901-1905,   INCLUSIVE.  181 
Ihlseng-  ( Magnus  C. ). 
1.  The  road-making  materials  of  Pennsylvania. 
Fa.  Dept.  Agric,  Bull.  no.  69,  104  pp.,  illus.,  1900. 
Includes  notes  on  the  composition  and  occurrence  of  rocks  suitable  for  road-making 
materials. 
Ing-all  (Elfric  Drew). 
1.  Section  of  mineral  statistics  and  mines,  Annual  report  for  1898. 
Can.  Geol.  Surv.,  Ann.  Rept.,  vol.  11,  Part  S,  192  pp.,  1900. 
Contains  statistics  of  production  and  notes  on  the  coal  fields  of  Nova  Scotia,  Manitoba,  North- 
western Territories  and  British  Columbia,  and  on  the  occurrence  of  natural  gas  and  oil 
in  Ontario. 
2.  Section  of  mineral  statistics  and  mines,  Annual  report  for  1899. 
Can.  Geol.  Surv.,  Ann.  Rept,.  vol.  12,  Part  S,  144,  pp.,  1901. 
.'I  Section  of  mines,  Annual  report  for  1900. 
Can.  Geol.  Surv.,  Ann.  Rept.,  vol.  13,  Part  S,  160  pp.,  1902. 
4.  Report  on  the  iron  ore  deposits   along  the  Kingston  and  Pembroke  Railway  in 
eastern  Ontario. 
Can. Geol.  Surv.,  Ann.  Rept.  new  ser.,  vol.  12,  pp.  11-911,1:;  pis..  1902. 
Gives  a  summary  of  the  geology  and  petrology  of  the  area  and  d  sscribes  the  character  and 
occurrence  of  the  iron  ores. 
5.  Section  of  mines,  Annual  report  for  1901 . 
Can.  Geol.  Surv.,  Ann.  Rept.,  vol.  14,  Part  S,  1(50  pp.,  1902. 
6.  Geology  of  the  Bruca  Mines  district  [Ontario]. 
Can.  Geol.  Surv.,  Sumin.  Rept.  f  >r  1902,  pp.  2  42-252,  1908. 
Describes  the  character  and  occurrence  of  rocks,  the  occurrence  of  copper  and  iron  ore 
deposits,  and  the  mining  operations. 
7.  Section  of  mines,  Annual  report  for  1902. 
Can.  Geol.  Surv.,  Ann.  Rept.,  vol.  15.  Part  s,  280  pp.,  1904. 
8.  Bruce  Mines  district  [Ontario]. 
Can.  Geol.  Surv.,  Summ.  Rept.  for  1903,  pp.  195-196,  1904. 
Includes  brief  notes  on  the  geology  of  the  district. 
9.  Section  of  mines,  Annual  report  f  ?r  1903. 
Can.  Geol.  Surv.,  Ann.  Rept.,  vol.16,  Part  S,  156  pp.,  1905. 
Ing-all  (  E.  D.)  and  Denis  (Theo.). 
1.  Geology  of  the  country  around  Bruce  Mines  [Ontario]. 
Can.  Geol.  Surv.,  Summ.  Rept.  for  1904,  pp.  179-190,  1  pi..  1905. 
Describes  the  occurrence  and  relations  of  igneous  and  sedimentary  rocks  in  this  region. 
Irving'  (John  Duer). 
1.  Some  recently  exploited  deposits  of  wolframite  in  the  Black  Hills  of  South  Dakota. 
Am.  Inst.  Mg.  Engrs.,  "trans. .  vol.  31,  pp.  6S3-895,  1  fig.  (small  geol.  map),  1902. 
Describes  the  general  geology  and  occurrence  of  wolframite  in  the  ore-bearing  veins  of  the 
region. 
2.  Ore  deposits  of  the  northern  Black  Hills. 
Mg.  &  Sci.  Press,  vol.  87,  pp.  166-167,  187-188,  205,  221-222,  1903. 
Describes  the  general  geology  of  the  region  and  the  character  and  geologic  occurrence  of  the 
gold  ore  deposits. 
3.  The  ore  deposits  of  the  northern  Black  Hills. 
Mg.  Rep.,  toI.  50,  pp.  430-431, 1904. 
Describes  the  general  geology  and  the  occurrence,  geologic  relations,  and  character  of  the 
gold,  silver,  tin,  and  wolframite  ore  deposits. 
4.  Ore  deposits  of  the  northern  Black  Hills. 
U.  S.  Geol.  Surv.,  Bull.  no.  225,  pp.  123-140,  1904.     Am.  Mg.  Cong.,  6th  Ann.  Sess.,  Rept.  of 
Proa,  pp.  38-51, 1904. 
Describes  the  general  geology  and  the  character  and  occurrence  of  ore  deposits,  chiefly  gold, 
lead-silver,  and  Avolframite,  in  Algonkian,  Cambrian,  Carboniferous,  and  eruptive  rocks. 
