216  BIBLIOGRAPHY    OF    NORTH    AMERICAN    GEOLOGY 
Lawson  (Andrew  C.) — Continued. 
11.  The  orbicular  gabbro  at  Dehesa,  San  Diego  Co.,  California. 
Cal.  Univ.,  Dept.  Geol.,  Bull.,  vol.  3,  pp.  383-396,  1  pi.,  1904. 
Describes  the  general  geology  of  the  region,  the  occurrence  of  the  orbicular  gabbro  and  its 
petrographic  characters  and  composition. 
12.  The  relation  of  geology  to  the  mining  industry. 
Mg.  &  Sci.  Press,  vol.  91,  p.  395,  1905. 
Lawson  (Andrew  C. )  and  Palache  (Charles). 
1.  The  Berkeley  Hills  [California].     A  detail  of  Coast  Range  geology. 
Univ.  Cal.,  Dept  Geol.,  Bull.,  vol.  2,  pp.  349-450,  8  pis.,  map,  1902. 
Describes  the  character,  occurrence,  and  relations  of  the  formations  of  the  region,  erosion 
intervals,  faults,  and  the  microscopic  characters  of  the  volcanic  rocks. 
Lawson  (Publius  V.). 
1.   Preliminary  notice  of  the  forest  beds  of  the  lower  Fox  [River,  Wisconsin]. 
Wis.  Nat.  Hist.  Soc,  Bull.,  vol.  2.  pp.  170-173,  1902. 
Lay  (H.  C). 
1.  Recent  geological  phenomena  in  the  "Tellunde  quadrangle"  of  the  U.  S.  Geolog- 
ical Survey  in  Colorado. 
Am.  Inst.  Mg.  Engrs.,  Trans.,  vol.  31,  pp.  558-567,  1902. 
Presents  the  author's  observations  on  the  glacial  phenomena,  earth  movements,  and  under- 
ground waters  of  the  region. 
Lazo  (Augustfn  M. )  and  Ordonez  (Ezequiel). 
1.  Las  canteras  de  San  Lorenzo  Totolinga  y  Echagaray  [Mexico]. 
Soc.  Geol.  Mex.,  Bol.,  t.  1,  pp.  25-34,  2  pis.,  1905. 
Describes  the  character,  occurrence,  and  geologic  relations  of  building  stone. 
Leach  (J.  C). 
1.  Report  of  the  State  natural  gas  supervisor. 
Ind.,  Dept.  Geol.  &  Nat.  Res.,  26th  Ann.  Rept.,  pp.  426-144,  1903. 
2.  Annual  report  of  the  State  natural  gas  supervisor. 
Ind.,  Dept.  Geol.  &  Nat.  Res..  27th  Ann.  Rept.,  pp.  477-493,  1903. 
Leach  (W.  W.). 
1 .  Crows  Nest  coal  fields. 
Can.  Geol.  Surv.,  Summ.  Rept.  lor  1901,  pp.  67-79,  1902. 
Describes  the  occurrence  of  coal  seams  <  if  <  'retaceous  age  in  this  area. 
2.  The  Blairmore-Frank  coal  fields. 
Can.  Geol.  Surv.,  Summ.  Rept.  for  1902,  pp.  167-179.  1903. 
Describes  the  geologic  structure  of  the  area. 
Le  Conte  (Joseph). 
1.  The  origin  of  transverse  mountain  valleys  and  some  glacial  phenomena  in  those 
of  the  Sierra  Nevada. 
[Cal.]  Univ.  Chronicle,  vol.  1,  pp.  479-497,  14  tigs.,  1898. 
Describes  the  geologic  history  of  the  Sierra  Nevada,  the  origin  of  certain  mountain  valleys, 
and  the  glacial  phenomena  in  these  valleys. 
2.  A  century  of  geology. 
Smith  Inst,,  Ann.  Rept.  for  1900,  pp.  265-287,  1901. 
3.  The  autobiography  of  Joseph  Le  Conte,  edited  by  William  Dallam  Armes. 
New  York,  D.  Appleton  and  Company,  1903.    xvii,  337  pp. 
4.  Elements  of  geology:  a  text-book  for  colleges  and  for  the  general  reader.     Revised 
and  partly  rewritten  by  Herman  Le  Roy  Fairchild.     Fifth  edition. 
New  York,  D.  Appleton  and  Company,  1903.    xii,  667  pp.,  1002  figs. 
Ls  Couppey  de  la  Forest  (Max). 
1.   Quelques  grottes  des  Etats-unis  d'Amerique. 
Spelunca,  t.  35,  no.  35,  pp.  3  (117) -21  (135),  2  tigs.,  1904. 
Describes  Mammoth  and  Colossal  caves  in  Kentucky,  Wyandotte  Cave  in  Indiana,  and  Wind 
Cave  and  Grand  Cavern  in  Colorado.  Includes  some  account  of  the  Carboniferous  forma- 
tions in  which  the  caves  occur. 
