FOR    THE    YEARS    1901-1905,   INCLUSIVE.  265 
Peck  (Frederick) — Continued. 
6.  The  talc  deposits  of  Phillipsburg,  N.  J.,  and  Easton,  Pa. 
N.  J.  Geol.  Surv.,  Ann.  Rept.  for  1904,  pp.  161-185,  3  pis.,  1905. 
Describes  the  occurrence,  quarrying,  and  uses  of  talc  deposits,  and  their  character  and  geo- 
logic relations. 
Peckham  ( Herbert  E. ). 
1.  On  the  bituminous  deposits  situated  at  the  south  and  east  of  Cardenas,  Cuba. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  12,  pp.  33-41,  2  figs.,  1901. 
Describes  the  occurrence  and  extent  of  these  bituminous  deposits. 
Peckham  (S.  F.). 
1.   [Remarks  on  paper  by  Herbert  E.  Peckham  on  the  bituminous  deposits  near 
Cardenas,  Cuba.] 
Am.  Jour.  Sci.,  4th  ser.,  vol.  12,  p.  41,  1901. 
Peet  (Charles  Emerson). 
1.  Glacial  and  post-Glacial  history  of  the  Hudson  and  Champlain  valleys. 
Jour.  Geol.,  vol.  12,  pp.  415-469,  617-660,  27  figs.,  1904. 
Penck  (Albrecht). 
1.  Climatic  features  in  the  land  surface. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  19,  pp.  165-174,  1905. 
Discusses  the  shaping  of  the  earth's  surface  by  river,  glacial,  and  eolian  agencies  as  influenced 
by  climate  conditions. 
Penfield  (Samuel  L.). 
1.  On  the  chemical  composition  of  childrenite. 
Yale  Bicentennial  publications.    Cont.  to  Mineral,  and  Petrog.,  pp.  124-125,  1901.     (From  Am. 
Jour.  Sci.,  vol.  19,  pp.  315-316,  1880.) 
2.  On  the  chemical  composition  of  amblygonite. 
Yale  Bicentennial  publications.    Cont.  to  Mineral,  and  Petrog.,  pp.  121-123,  1901.     (From  Am. 
Jour.  Sci.,  vol.  18,  pp.  295-301,  1879.) 
3.  On  spangolite,  a  new  copper  mineral. 
Yale  Bicentennial  publications.    Cont.  to  Mineral,  and  Petrog.,  pp.  168-175,  1901.     (From  Am. 
Jour.  Sci.,  vol.  39,  pp.  370-378,  1890.) 
4.  On  pearcite,  a  sulpharsenite  of  silver. 
Yale  Bicentennial  publications.    Cont.  to  Mineral,  and  Petrog.,  pp.  252-260,  1901.     (From  Am. 
Jour.  Sci.,  vol.  2,  pp.  17-20,  1896.) 
5.  On  the  chemical  composition  of  hamlinite  and  its  occurrence  with  bertrandite  at 
Oxford  County,  Maine. 
Yale  Bicentennial  publications.    Cont.  to  Mineral,  and  Petrog.,  pp.  2X7-290,  1901.     ( From  Am. 
Jour.  Sci.,  vol.  4,  pp.  313-316,  1897.) 
6.  Tables  of  minerals,  including  the  uses  of  minerals  and  statistics  of  the  domestic 
production. 
New  Haven,  Conn.,  1903.    77  pp. 
7.  On  crystal  drawing. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  19,  pp.  39-75,  59  figs.,  1905. 
Describes  methods  of  representing  crystals. 
Penfield  (Samuel  L.)  and  Foote  (H.  W.). 
1.  On  bixbyite,  a  new  mineral. 
Yale  Bicentennial  publications.    Cont.  to  Mineral,  and  Petrog.,  pp.  283-286, 1901.     (From  Am. 
Jour.  Sci.,  vol.  4,  pp.  105-107,  1897.) 
2.  On  clinohedrite,  a  new  mineral  from  Franklin,  N.  J. 
Yale  Bicentennial  publications.    Cont.  to  Mineral,  and  Petrog.,  pp.  291-296,  1901.     (From  Am. 
Jour.  Sci  ,  vol.  5,  pp.  289-293,  1898.) 
Penfield  (Samuel  L. )  and  Ford  ( W.  E.). 
1.  On  calaverite. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  12,  pp.  225-245,  30  figs.,  1901. 
Describes  occurrence  and  crystallographic  characters  of  the  material. 
