﻿Tile 
  average 
  catch 
  Tor 
  the 
  eleven 
  years, 
  given 
  above, 
  

   we 
  find 
  to 
  be 
  581,357; 
  the 
  average 
  cateli 
  of 
  the 
  iirst 
  live 
  

   years 
  was 
  ():)7,8()0, 
  and 
  during 
  the 
  next 
  five 
  years 
  this 
  

   average 
  was 
  ivdnced 
  to 
  518,:2()<). 
  This 
  average, 
  althongh 
  

   a 
  decrease 
  from 
  the 
  average 
  of 
  the 
  preceding 
  live 
  years, 
  

   Avas 
  consi(h'i-ably 
  in<'reased 
  by 
  the 
  coini)aratively 
  large 
  

   catcli 
  of 
  the 
  s[)ring 
  of 
  b^70 
  — 
  the 
  first 
  year 
  that 
  the 
  pro- 
  

   duct 
  of 
  artilicial 
  propagation 
  was 
  materially 
  felt. 
  

  

  If 
  we 
  eliminate 
  the 
  catch 
  of 
  this 
  year 
  and 
  take 
  the 
  

   average 
  of 
  the 
  four 
  preceding 
  years 
  — 
  that 
  is 
  1875, 
  ■7<;, 
  

   '77 
  and 
  '78 
  — 
  we 
  have 
  an 
  average 
  yield 
  for 
  those 
  vears 
  of 
  

   4(>'i,f;()(>, 
  but 
  the 
  catch 
  of 
  b^8<) 
  was^TH.O^i), 
  an 
  increase 
  of 
  

   88,572 
  ovei' 
  the 
  average 
  catch 
  for 
  the 
  whole 
  eleven 
  years, 
  

   and 
  an 
  increase 
  of 
  9(»,720 
  <)\-er 
  the 
  average 
  for 
  the 
  five 
  

   preceding 
  years, 
  including 
  the 
  year 
  1871), 
  and 
  212,829 
  

   ove]- 
  the 
  average 
  of 
  the 
  four 
  years 
  immediately 
  preced- 
  

   ing 
  the 
  return 
  of 
  the 
  fish 
  produced 
  by 
  ai-tificial 
  means. 
  

   Statement 
  shoicing 
  amount 
  of 
  fix] 
  i 
  aold 
  in 
  Wossfiinf/ton, 
  

   and 
  cMea'anclrlo 
  from 
  \SCy^) 
  to 
  iSi^o 
  mctusitr. 
  

  

  