HERMAN.]  BULLETINS.  43 
94.  The  mechanism  of  solid  viscosity,  by  Carl  Barus.  1892.  138  pp.  Price, 
15  cents. 
95.  Earthquakes  in  California  in  L890  and  1891,  by  Edward  Singleton  Holden. 
1892.     31  pp.     Price,  5  cents. 
96.  The  volume  thermodynamics  of  liquids,  by  Carl  Barus.  1892.  100  pp.,  8 
pis.     Price,  10  cents. 
97.  The  Mesozoic  Echinodermata  of  the  United  States,  by  William  Bullock 
Clark.      IS!)!!.     207  pp.,  50  pis.     Price,  20  cents. 
98.  Flora  <>i'  the  outlying  Carboniferous  basins  of  southwestern  Missouri,  by 
David  White.      L893.     130  pp..  5  pis.     Price,  15  cents. 
99.  Record  of  North  American  geology  for  ISO],  by  Nelson  Horatio  Darton. 
L892.     73  pp.     Price,  LO  cents. 
100.  Bibliography  and  index  of  the  publications  of  the  United  States  Geolog- 
ical Survey,  with  the  laws  governing  their  printing  and  distribution,  by  Philip 
Creveling  Warman.     L893.     495  pp.     Price,  25  cents. 
101.  Insect  fauna  of  Rhode  Island  coal  field,  by  Samuel  Hubbard  Scudder. 
L893.      27  pp.,  2  pis.      Price,  5  cent-. 
102.  A  catalogue  and  bibliography  of  North  American  Mesozoic  Invertebrata, 
by  Cornelius  Breckinridge  Boyle.     L893.     315  pp.     Price,  25  cents. 
103.  High  temperature  work  in  igneous  fusion  and  ebullition,  chiefly  in  rela- 
tion to  pressure,  by  Car]  Barus.     L893.     57  pp..  o  pis.     Price,  10  cents. 
104.  The  glaciation  of  the  Yellowstone  Valley  north  of  the  Park,  by  Walter 
Harvey  Weed.     L893.     ll  pp..  I  pis.     Price,  5  cents. 
105.  The  Laramie  and  the  overlying  Livingston  formation  in  Montana,  by 
Walter  Harvey  Weed,  with  report  on  flora,  by  Frank  Hall  Knowlton.  1893. 
OS  pp.,  <i  pis.       Price,    10  cents. 
100.  The  Colorado  formation  and  its  invertebrate  fauna.  byTimothy  W.  Stan- 
ton.    L893.     288  pp..  45  pis.     Price.  20  cents. 
107.  The  trap  dikes  of  the  Lake  Champlain  region,  by  James  Furman  Kemp 
and  Vernon  Freeman  Marsters.     L893.     62  pp.,  1  pis.     Price,  10  cents. 
108.  A  geological  reconnoissance  in  central  Washington,  by  Israel  Cook  Rus- 
sell.    L893.      los  pp..  12  pis.  and  maps.     Price,  15  cents. 
loo.  The  eruptive  and  sedimentary  rocks  on  Pigeon  Point,  Minnesota,  and  their 
contact  phenomena,  by  William  Shirley  Bayley.  L893.  121  pp.,  16  pis.  and 
maps.      Price,   15  cents. 
110.  The  Paleozoic  section  in  the  vicinity  of  Three  Forks,  Montana,  by  Albert 
Charles  Peale;  with  petrographic  notes  by  George  Perkins  Merrill.  1893.  56 
pp.,  6  pis.     Price,  LO  cents. 
111.  Geology  of  the  Big  Stone  Gap  coal  field  of  Virginia  and  Kentucky,  by 
Marius  R.  Campbell.      L893.      L06  pp. ,  6  pis.  and  maps.     Price,  15  cents. 
112.  Earthquakes  in  California  in  L892,  by  Charles  D.  Perrine,  of  the  Lick 
Observatory.      L893.     5;  pp.      Price,  10  cents. 
1 13).  A  report  of  work  done  in  the  division  of  chemistry  during  the  fiscal  years 
1891-92  and  L892-93;  Frank  Wigglesworth  Clarke,  chief  chemist.  1893.  115  pp. 
Price,  15  cents. 
Tschermak'a  theory  of  the  chlorite  group  and  its  alternative,  by  F.  W.  Clarke,  pp.  11-21. 
The  constitution  of  the  lithia  micas,  bj  F.  W.  Clarke,  pp.  22-26. 
Experiments  upon  the  constitution  of  certain  micas  and  chlorites,  by  F.  W.  Clarke  and  E.  A. 
Schneider,  pp.  27-33. 
Notes  on  the  action  of  ammonium  chloride  upon  silicates,  by  E.  A.  Schneider  and  F.  W. 
Clarke,  pp.  34-36. 
The  preparation  and  specific  gravity  of  crystallized*  uranium  dioxide,  by  W.  F.  Hillebrand, 
pp.  37-40. 
A  further  example  of  the  isomorphism  of  thoria  and  uranium  dioxide,  by  W.  F.  Hillebrand. 
pp.  41-43. 
The  composition  of  rowlandite  and  mackintoshite,  by  W.  F.  Hillebrand,  pp.  44-48. 
