FOR    THE    YEARS    1901-1905,   INCLUSIVE.  29 
Bartsch  (Paul),  Dall  (W.  H.)  and. 
1.  A  new  Californian  Bittium. 
See  Dall  (W.  H.)  and  Bartsch  (Paul),  1. 
2.  Synopsis  of  the  genera,  subgenera,  and  sections  of  the  family  Pyramidellidas. 
See  Dall  (W.  H.)  and  Bartsch  (P.),  2. 
Bascom  (Florence). 
1.  The  geology  of  the  crystalline  rocks  of  Cecil  County  [Maryland]. 
Md.  Geol.  Surv.,  Cecil  Co.,  pp.  83-148,  4  pis.,  3  figs.,  1902. 
Discusses  the  character,  composition,  and  distribution  of  the  crystalline  rocks  of  the  county. 
A  glossary  of  technical  terms  is  added  by  E.  B.  Mfathews] . 
2.  Water  resources  of  the  Philadelphia  district. 
U.  S.  Geol.  Surv.,  Water-Supply  and  Irrigation  Paper  no.  106,  75  pp.,  4  pis.,  3  figs.,  1904. 
Includes  a  short  general  account  of  the  physiography  and  stratigraphy,  and  of  the  igneous 
and  sedimentary  rocks  of  the  area. 
3.  Piedmont  district  of  Pennsylvania. 
Geol.  Soc.  Am.,  Bull.,  vol.  16,  pp.  289-328,  17  pis.,  1905. 
Describes  the  geography  and  general  geology  of  the  Piedmont  district  of  Pennsylvania,  the 
character,  occurrence,  and  relations  of  pre-Cambrian,  Cambrian,  and  Ordovician  forma- 
tions, and  the  petrologic  characters  and  relations  of  the  igneoub  rocks  occurring  in  the  area 
Baskerville  (Charles). 
1.  Kunzite,  a  new  gem. 
Science,  new  ser.,  vol.  18,  pp.  303-304,  1903. 
Describes  characters  of  the  spodumene  obtained  from  San  Diego  County,  California,  and 
gives  to  this  gem  the  name  of  kunzite. 
Baskerville  (Charles)  and  Kunz  (George  F. ). 
1.  Kunzite  and  its  unique  properties. 
Am.  Jour.  Sci.,  4th  ser.,  vol.  18,  pp.  25-28,  2  figs.,  1904. 
Bassler  (Ray  S. ). 
1.  The  structural  features  of  the  bryozoan  genus  Homotrypa,  with  descriptions  of 
species  from  the  Cincinnatian  Group. 
U.  S.  Nat.  Mas.,  Proc,  vol.  26,  pp.  565-591,  6  pis.,  1903. 
2.  Portland-cement  resources  of  Virginia. 
U.  S.  Geol.  Surv.,  Bull.  no.  243,  pp.  312-323,  1  pi.,  1905. 
Describes  the  character,  occurrence,  and  geologic  relations  of  limestones  and  shales  of  Vir- 
ginia suitable  for  the  manufacture  of  Portland  cement. 
3.  Cement  materials  of  the  valley  of  Virginia. 
U.  S,  Geol.  Surv.,  Bull.  no.  260,  pp.  531-544,  2  figs.,  1905. 
Describes  the  general  geology  of  the  region,  and  the  occurrence,  character,  and  location  of 
limestones,  shales,  and  marls  suitable  for  the  manufacture  of  cement. 
4.  The  subdivisions  of  the  Shenandoah  limestone. 
Abstract:  Science,  new  ser.,  vol.  22,  p.  756,  1905. 
Bassler  (R.  S.),  Ulrich  (E.  O.)  and. 
1.  A  revision  of  the  Paleozoic  bryozoa.     Part  I.  On  genera  and  species  of  Ctenosto- 
mata. 
See  Ulrich  (E.  O.)  and  Bassler  (R.  S.),  1. 
2.  A.  revision  of  the  Paleozoic  bryozoa.     Part  II.  On  genera  and  species  of  Treposto- 
mata. 
See  Ulrich  (E.  O.)  and  Bassler  (R.  S.),  2. 
3.  Systematic  paleontology  of  the  Miocene  deposits:  Ostracoda. 
See  Ulrich  (E.  O.)  and  Bassler  (R.  S.),  3. 
4.  Systematic  paleontology  of  the  Miocene  deposits:  Bryozoa. 
See  Ulrich  (E.  O.)  and  Bassler  (R.  S.),  4. 
