﻿774 
  Mr. 
  T. 
  J. 
  Richmond 
  on 
  the 
  Formation 
  of 
  Strice 
  

  

  important 
  differences 
  in 
  the 
  character 
  o£ 
  the 
  striation 
  in 
  the 
  

   A^arious 
  tubes. 
  Thus 
  in 
  some 
  tubes, 
  particularly 
  in 
  one 
  about 
  

   3 
  cms. 
  in 
  diameter, 
  as 
  many 
  as 
  50 
  to 
  150 
  lines 
  were 
  clearly 
  

   formed 
  and 
  measured, 
  while 
  in 
  others 
  only 
  about 
  20 
  were 
  

   formed 
  at 
  all 
  and 
  some 
  of 
  these 
  indistinctly. 
  The 
  readings 
  

   of 
  this 
  set 
  of 
  experiments 
  are 
  shown 
  in 
  Table 
  II. 
  and 
  graphi- 
  

   cally 
  in 
  Curve 
  II. 
  fig. 
  1. 
  

  

  A 
  further 
  set 
  of 
  readings 
  is 
  given 
  in 
  Table 
  III. 
  and 
  

   graphically 
  in 
  Curve 
  III. 
  fig. 
  1. 
  

  

  Table 
  II. 
  

  

  Diameters 
  of 
  tubes 
  (ixim.). 
  

  

  ances. 
  

  

  3-5. 
  

  

  9. 
  

  

  16-5. 
  

  

  44. 
  

  

  -72 
  mm. 
  

  

  •93 
  mm. 
  

  

  •75 
  mm. 
  

  

  •52 
  mm. 
  

  

  UQ 
  

  

  •80 
  „ 
  

  

  -94 
  „ 
  

  

  •72 
  „ 
  

  

  •55 
  „ 
  

  

  ■^ 
  

  

  •82 
  „ 
  

  

  •95 
  „ 
  

  

  •73 
  „ 
  

  

  •58 
  „ 
  

  

  .§ 
  

  

  •75 
  „ 
  

  

  •94 
  „ 
  

  

  •77 
  „ 
  

  

  •59 
  „ 
  

  

  ^ 
  

  

  

  

  •76 
  „ 
  

  

  -55 
  „ 
  

  

  u 
  

  

  Q 
  

  

  

  

  

  •53 
  „ 
  

  

  

  

  

  

  -59 
  „ 
  

  

  tuD 
  

  

  

  

  

  -54 
  „ 
  

  

  

  

  

  

  •64 
  „ 
  

  

  <g 
  

  

  

  

  

  •57 
  „ 
  

  

  « 
  

  

  

  

  

  •63 
  „ 
  

   -55 
  „ 
  

  

  Means 
  ... 
  

  

  •77 
  mm. 
  

  

  •94 
  mm. 
  

  

  •76 
  mm. 
  

  

  •56 
  mm. 
  

  

  Table 
  III. 
  

  

  Diameters 
  of 
  tubes 
  (mm.). 
  

  

  i 
  

  

  s 
  

  

  to 
  

  

  a 
  

  

  3. 
  

  

  8. 
  

  

  10. 
  

  

  22. 
  

  

  33. 
  

  

  72-8 
  -^^ 
  

  

  

  12-2...10 
  

  

  i8-5...;o 
  

  

  25-1...10 
  

   32-7...10 
  

  

  70-0 
  20 
  

  

  '^I'^.-IO 
  

  

  79-2 
  00 
  

   147-7 
  ^^^ 
  

  

  •9 
  

   5.5-10 
  

  

  iY^-10 
  

   7:4-10 
  

  

  ^^<::}o 
  

  

  33-8 
  ^". 
  

  

  1^2-1. 
  ..10 
  

   158-4 
  10 
  

  

  150-3 
  ,^ 
  i 
  

   156-8.. 
  .|0 
  

  

  1606 
  '^ 
  

   160-0. 
  ,^ 
  

  

  128-7.. 
  :jo 
  

  

  122-1.. 
  .jO 
  

   115-8..10 
  

   109-2.. 
  .{.^ 
  

   103-0...(0 
  

   96-9 
  ^0 
  

  

  26-2 
  ^0 
  

  

  Means 
  ... 
  

  

  -50 
  mm. 
  -99 
  mm. 
  | 
  '71 
  mm. 
  

  

  -57 
  mm. 
  

  

  •64 
  mm. 
  

  

  