Oct.  1900.  Annual  Report  of  the  Director. 
443 
Ayer  Pioneer  Hose  Company  of  Phoenix,  Arizona  ;  specimens  of  the 
Allegan,  Oakland  and  St.  Genevieve  County  meteorites  ;  representa- 
tive series  of  quartz  geodes  of  the  Keokuk  beds  ;  the  collection  of 
fossil  dinosaurs  obtained  by  Assistant  Curator  Riggs,  and  a  repre- 
sentative series  of  cave  formations  obtained  by  Curator  Farrington^ 
have  been  added  to  the  collections  in  the  department  of  Geology. 
Through  the  generosity  of  Mr.  W.  J.  Chalmers,  funds  were  provided 
which  enabled  the  department  to  prepare  a  collection  of  crystals  of 
the  United  States  minerals  for  exhibition  at  the  Paris  Exposition.  At 
the  close  of  the  exposition  the  collection  will  be  returned  to  the 
Museum.     It  was  awarded  a  silver  medal. 
Exchanges. — This  system  of  obtaining  material  is  still  found 
advantageous,  and  exchange  relations  have  been  sustained  with  an 
increased  number  of  institutions  both  at  home  and  abroad  during 
the  year.  Amongst  such  institutions  may  be  mentioned  the  following: 
The  British  Museum,  London;  the  Free  Museum,  Liverpool;  Grey 
Herbarium,  Cambridge;  Hof  Museum,  Berlin;  the  Botanical  Gardens, 
Natal,  South  Africa;  the  Institute  of  Mines,  St.  Petersburg,  Russia; 
Hope  Botanical  Gardens,  Jamaica;  besides  a  number  of  prominent 
individual  collectors.  The  number  of  specimens  sent  in  exchange 
during  the  year  was  1,596,  representing  21  transactions.  The  number 
of  specimens  received  in  exchange  was  4,348,  representing  28  trans- 
actions. 
Expeditions  and  Field  Work. — An  unusual  amount  of  work  has-, 
been  done  during  the  year  in  the  field.  The  following  is  a  list  of  the 
expeditions: 
Locality.  Collectors. 
Ozark  Mountains,  Arkansas,    H.  W.  Nichols, 
Six  Nation  Reserve,  Canada,    S.  C.  Simms, 
Pacific  Coast  States,    .    .    .  George  A.  Dorsey, 
Union  County,  Illinois,    .    .  Dr.  W.  A.  Phillips, 
Western  Colorado,  .  .  .  .  E.  S.  Riggs, .  .  . 
Muskoka    Lakes,  Ontario, 
Canada,   S.  E.  Meek,  .    .  . 
Southern  Indiana,   .    .    .    .  O.  C.  Farrington,  . 
Ontario,  Canada, .....  S.  E.  Meek,  .    .  . 
Material. 
Zinc  Ores. 
Ceremonial  Paraphernalia,. 
Domestic  Utensils,  Yarns, 
etc.,  etc. 
Ethnological  material  from 
Shoshone  and  other  stocks. 
Aboriginal  quarry  and  Shop 
site  material. 
Fossil  Dinosaurs. 
Fishes,  Reptiles,  Insects  and 
Mammals- 
Cave  formations. 
Fishes,  Reptiles,  Insects  and 
Mammals- 
