﻿E. 
  L. 
  Troxell 
  — 
  An 
  Oligocene 
  Camel. 
  389 
  

  

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  not 
  

  

  of 
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  Art. 
  XXXV. 
  — 
  Sand 
  Fusions 
  from 
  Gun 
  Cotton 
  / 
  by 
  Charles 
  

  

  E. 
  MUNROE. 
  

  

  While 
  engaged 
  in 
  a 
  series 
  of 
  tests 
  on 
  means 
  of 
  exploding 
  

   grin 
  cotton 
  wherein 
  the 
  charges 
  were 
  fired 
  imbedded 
  in 
  sand 
  

   on 
  an 
  old 
  sea 
  beach, 
  it 
  was 
  observed 
  on 
  excavating 
  after 
  one 
  

   of 
  the 
  tests 
  that 
  the 
  loose 
  sand 
  had 
  in 
  places 
  been 
  fused 
  into 
  

   forms 
  analogous 
  to 
  those 
  of 
  the 
  disks 
  of 
  gun 
  cotton 
  used. 
  

  

  In 
  the 
  experiments 
  the 
  charges 
  were 
  enclosed 
  in 
  cast 
  iron 
  

   shells 
  of 
  a 
  size 
  designed 
  to 
  closely 
  confine 
  the 
  charge, 
  the 
  

   walls 
  of 
  the 
  shells 
  being 
  \\ 
  inches 
  in 
  thickness, 
  and 
  the 
  whole 
  

   buried 
  to 
  a 
  depth 
  of 
  three 
  feet 
  in 
  the 
  compacted 
  sand 
  of 
  the 
  

   beach, 
  which 
  was 
  of 
  a 
  very 
  uniform 
  granulation. 
  In 
  the 
  par- 
  

   ticular 
  experiment 
  in 
  which 
  the 
  sand 
  fusions 
  were 
  formed 
  the 
  

   shell 
  contained 
  one 
  disk 
  of 
  dry 
  gun 
  cotton 
  and 
  three 
  of 
  gun 
  

   cotton 
  wet 
  with 
  20 
  per 
  cent 
  of 
  water, 
  and 
  the 
  charge 
  was 
  

   primed 
  with 
  4 
  ounces 
  of 
  gunpowder. 
  On 
  firing 
  the 
  sand 
  was 
  

   slightly 
  disturbed, 
  the 
  base 
  plug 
  of 
  the 
  shell 
  thrown 
  out 
  to 
  a 
  

   small 
  distance 
  and 
  the 
  shell 
  broken 
  into 
  large 
  fragments 
  which 
  

   remained 
  imbedded, 
  but 
  no 
  " 
  crater 
  " 
  was 
  formed 
  as 
  was 
  the 
  

   case 
  in 
  all 
  other 
  of 
  the 
  experiments. 
  There 
  were 
  three 
  of 
  

   these 
  fusions 
  found 
  on 
  excavation 
  some 
  five 
  minutes 
  after 
  the 
  

  

  