FOE    THE    YEARS    1901-1905,   INCLUSIVE.  285 
Rickard  (T.  A.)— Continued. 
7.  Across  the  San  Juan  Mountains. 
New  York,  The  Engineering  and  Mining  Journal,  115  pp.,  illus.,  1903;  appeared  serially  in  the 
Eng.  &  Mg.  Jour.,  vol.  76,  pp.  7-10,  45-46,  82-84,  118-119,  154-155,  230.  269-270,  307-308,  346, 
385-387,  423-424,  461-463,  illus.,  1903. 
Contains  observations  on  the  geologic  structure,  ore  deposits,  and  mining  operations  of  south- 
western Colorado. 
8.  The  lodes  of  Cripple  Creek  [Colorado]. 
Eng.  &  Mg.  Jour.,  vol.  75,  pp.  179-181,  5  figs.,  1903. 
Discusses  the  occurrence  of  ore  bodies. 
9.  Water  in  veins— a  theory. 
Eng.  &  Mg.  Jour.,  vol.  75,  pp.  402-403,  1903. 
Discusses  the  distribution  of  water  underground  and  its  bearing  upon  the  origin  of  ore 
deposits. 
10.  The  syncline  as  a  structural  type. 
Eng.  &  Mg.  Jour.,  vol.  75,  p.  746,  6  figs.,  1903. 
Discusses  the  syncline  in  relation  to  ore  deposits. 
11.  The  veins  of  Boulder  and  Kalgoorlie. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  33,  pp.  567-577.  5  figs.,  1903. 
Describes  the  occurrence,  character,  and  structure  of  gold-bearing  veins  of  Boulder,  Colorado 
and  Kalgoorlie,  West  Australia. 
12.  The  lodes  of  Cripple  Creek  [Colorado] . 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  33,  pp.  578-618,  23  rigs.,  1903. 
Describes  the  general  geology  of  the  region,  the  occurrence  and  character  of  the  lodes  and 
veins,  and  the  position  of  the  ore  bodies. 
13.  Genetic  classification  of  ore  deposits. 
Abstract:  Science,  new  ser.,  vol.  17,  p.  542,  1903. 
14.  Copper  mines  of  Lake  Superior. 
Eng.  &  Mg.  Jour.,  vol.  78,  pp.  585-587,  625-627,  665-667,  705-706,  745-747,  785-787,  825-827,  865-867, 
905-907,  945-950,  985-987,  illus.,  1904. 
Includes  a  description  of  the  general  geology  of  the  region,  the  character  and  occurrence  of 
the  copper-ore  deposits,  and  the  mining  operations. 
15.  The  copper  mines  of  Lake  Superior. 
New  York,  The  Engineering  &  Mining  Journal,  1905.    164  pp.,  illus. 
Rickert  (Julius). 
1.  Coal  in  Alberta,  Canada. 
Eng.  &  Mg.  Jour.,  vol.  73,  pp.  766-767,  1902. 
Contains  brief  notes  on  the  coals  of  Crow's  Nest  coal  field. 
Hies  (Heinrich). 
1.  Clays  and  shales  of  Michigan,  their  properties  and  uses. 
Mich.  Geol.  Surv..  vol.  8,  pt,  1,  66  pp.,  4  pis.,  6  figs.,  1900. 
Contains  notes  on  the  geologic  occurrence  and  chemical  composition  of  clays  in  Michigan. 
2.  Theodore  Greely  White. 
Am.  Geol.,  vol.  28,  pp.  269-270,  1  pi.  (por.),  1901. 
Gives  a  brief  sketch  of  his  life  and  work,  and  a  list  of  publications. 
3.  Clays  of  New  York,  their  properties  and  uses. 
N.  Y.  State  Mus.,  54th  Ann.  Rept.,  vol.  2,  pp.  493-944.  140  pis.,  map  in  pocket,  1902. 
4.  Lime  and  cement  industries  of  New  York. 
N.  Y.  State  Mus.,  Bull.  no.  44,  pp.  639-848,  85  pis.,  map  in  pocket.  1901;  N.Y.  state  Mus.,  54th 
Ann.  Rept,,  vol.  3,  1902. 
Discusses  origin,  chemical  composition  and  geologic  occurrence  in  New  York  of  lime  and 
cement  materials. 
5.  Report  on  the  clays  of  Maryland. 
Md.  Geol.  Surv.,  vol.  4,  pp.  205-505,  51  pis.,  30  figs.,  1902. 
Discusses  origin,  composition,  properties,  geologic  and  geographic  distribution,  and  working 
of  the  clays  of  Maryland. 
