﻿OYSTERS 
  AND 
  METHODS 
  OF 
  OYSTER-CULTURE. 
  

  

  315 
  

  

  12 
  or 
  14 
  inches 
  in 
  diameter, 
  at 
  or 
  near 
  each 
  end 
  of 
  the 
  bar. 
  These 
  

   hoops 
  ride 
  over 
  the 
  bottom 
  like 
  runners 
  and 
  the 
  crushing 
  surface 
  is 
  

   thus 
  much 
  reduced. 
  The 
  general 
  construction 
  of 
  these 
  tangles 
  is 
  shown 
  

   in 
  cut 
  2. 
  The 
  weight 
  appears 
  to 
  be 
  unnecessarily 
  great, 
  all 
  that 
  is 
  

   actually 
  required 
  being 
  that 
  which 
  is 
  suflBcient 
  to 
  hold 
  the 
  tangles 
  

   upon 
  the 
  bottom 
  when 
  in 
  motion, 
  a 
  condition 
  which 
  is 
  largely 
  insured 
  

   by 
  the 
  sagging 
  of 
  the 
  chain 
  used 
  in 
  towing. 
  

  

  A 
  vessel-owner 
  at 
  New 
  Haven, 
  Capt. 
  Thomas 
  Thomas, 
  who 
  has 
  been 
  

   very 
  successful 
  in 
  "starring," 
  uses 
  a 
  much 
  lighter 
  tangle 
  constructed 
  

   as 
  follows: 
  To 
  a 
  half-inch 
  chain, 
  about 
  8 
  feet 
  long, 
  stout 
  wires 
  12 
  

  

  Cut 
  2.— 
  Tangle. 
  

  

  Cut 
  3.— 
  Tackle. 
  

  

  or 
  14 
  feet 
  long 
  are 
  attached 
  at 
  regular 
  intervals, 
  and 
  to 
  these 
  wires 
  

   are 
  fastened 
  mops 
  or 
  swabs 
  of 
  cotton 
  waste. 
  The 
  chain 
  is 
  securely 
  

   lashed 
  to 
  a 
  bar 
  about 
  7 
  feet 
  long 
  by 
  li 
  inches 
  wide 
  and 
  half 
  an 
  inch 
  

   thick, 
  provided 
  with 
  a 
  bracket 
  and 
  eye 
  for 
  the 
  attachment 
  of 
  the 
  drag 
  

   chain, 
  as 
  shown 
  in 
  cut 
  2. 
  

  

  When 
  in 
  use 
  this 
  tangle 
  covers 
  an 
  area 
  about 
  7 
  feet 
  wide 
  and 
  12 
  feet 
  

   long, 
  forming 
  a 
  dense 
  mat 
  of 
  snarled 
  cotton 
  threads. 
  One 
  of 
  these 
  is 
  

   towed 
  on 
  each 
  side 
  of 
  the 
  vessel, 
  like 
  a 
  dredge, 
  and, 
  sweeping 
  over 
  the 
  

   bottom, 
  entangles 
  the 
  starfish 
  with 
  which 
  it 
  comes 
  into 
  contact. 
  The 
  

   length 
  of 
  time 
  during 
  which 
  the 
  mops 
  are 
  towed 
  depends 
  ujjon 
  the 
  

  

  