20  SMITHSONIAN    MISCELLANEOUS    COLLECTIONS  VOL.    96 
tered  specimens  and  caches  of  blades  have  been  found  in  the  sur- 
rounding country. 
Plate  4.- — Above,  several  types  of  projectile  points,  knives,  scrapers, 
and  drills,  made  of  quartzite.  The  material  was  obtained  in  the  form 
of  boulders  and  pebbles,  so  plentiful  in  the  region,  and  is  of  various 
colors  and  degrees  of  coarseness.  The  two  specimens  a  are  drills 
which  had  evidently  been  inserted  in  shafts.  The  points  are  smoothed 
and  rounded,  the  efifect  of  the  rotary  movement  of  the  drill  when  in 
use.  The  point  of  Z?  is  likewise  worn  from  use.  This  and  the  four 
specimens  to  the  left  in  the  same  row  may  be  classed  as  scrapers. 
At  the  bottom  of  the  plate  are  six  examples  of  projectile  points, 
or  blades,  made  of  diabase.  No  other  similar  pieces  were  found  on 
the  site.  All  are  greatly  weathered,  including  the  fractured  surfaces 
of  the  four  broken  specimens.  The  great  similarity  of  form  and  size 
of  the  latter  is  remarkable.  These  have  been  altered  to  a  greenish- 
brown  color,  are  very  rough,  and  resemble  certain  of  the  large  imple- 
ments shown  in  plate  8. 
Plate  5. — A  very  large  proportion  of  all  the  small  flaked  objects 
found  on  the  site  are  made  of  white  quartz,  all  of  which  had  been 
derived  from  water-worn  pebbles.  Such  pebbles  occur  here  in  vast 
quantities  ;  the  majority  are  small  and  so  provided  an  unlimited  supply 
of  pieces  of  suitable  size  for  the  making  of  arrowpoints  and  of  a 
variety  of  small  implements  such  as  scrapers,  drills,  and  knives. 
Examples  of  all  are  illustrated.  Some  forms  are  far  more  numerous 
than  others,  and  although  a  great  quantity  of  broken  pieces  has  been 
recovered  from  the  site,  together  with  many  entire  specimens,  only 
one  example  of  the  triangular  type  of  point  has  been  obtained. 
Several  varieties  occurring  on  sites  farther  up  the  valley,  beyond  the 
falls,  have  not  been  found  here. 
A  single  specimen  of  much  interest  is  shown  at  the  bottom  of  the 
plate.  It  was  found  a  few  inches  under  the  surface,  some  50  feet 
back  from  the  brow  of  the  bank  that  slopes  to  the  river  about  15  feet 
below.    It  is  made  of  gray  flint  °'  which  is  unaltered.    The  flaking  is 
"  The  specimen  was  examined  by  E.  P.  Henderson,  of  the  Department  of 
Geology,  U.  S.  National  Museum,  who  described  the  material  thus :  "  This  is 
a  gray  flint-like  material  showing  banding  due  to  the  arrangement  of  small 
cavities  rather  than  to  a  difference  in  composition  of  the  flint.  There  are  a  few 
brown  inclusions  of  limonite  in  the  gray  flint.  A  light  brown  siliceous  area  at 
one  end  has  not  been  altered  to  the  flint.  In  this  there  are  also  some  brown 
limonitic  inclusions.  It  appears  that  the  original  mass  was  a  nodule  of  flint  with 
a  surface  of  this  light  brown  material  inclosing  the  gray  flint.  Since  there  is 
a  similar  inclusion  in  both  portions,  it  is  likely  that  both  have  formed  at  the 
same  time ;  consequently,  the  difference  is  not  due  to  weathering." 
