﻿i7 
  

  

  20. 
  Carp, 
  Cyprinus 
  carpio, 
  by 
  Rudolph 
  Hessels 
  in 
  1879. 
  

  

  21. 
  Spanish 
  mackerel, 
  Scomber 
  omorus 
  maculatus, 
  R. 
  Edward 
  Earll 
  in 
  

  

  1880. 
  

  

  22. 
  Cero, 
  Scomber 
  omorus 
  regalis, 
  by 
  R. 
  Edward 
  Earll 
  in 
  1880. 
  

  

  23. 
  Moon-fish, 
  Chcetodipterus 
  faber, 
  by 
  R. 
  Edward 
  Earll 
  in 
  1880. 
  

  

  24. 
  Silver 
  gar, 
  Be 
  lone 
  longirostris, 
  Marshall 
  McDonald 
  in 
  1881. 
  

  

  25. 
  Gold 
  fish, 
  Carassius 
  anratus, 
  by 
  Rudolph 
  Hessel 
  in 
  1881. 
  

  

  26. 
  Tench, 
  Tinea 
  vulgaris, 
  by 
  Rudolph 
  Hessel 
  in 
  1881. 
  

   29. 
  Soft-shelled 
  clam, 
  My 
  a 
  arenaria, 
  J. 
  A. 
  Ryder, 
  1881. 
  

  

  "Within 
  the 
  last 
  few 
  years 
  the 
  improvements 
  in 
  the 
  

   apparatus 
  and 
  methods 
  of 
  fish 
  culture 
  have 
  been 
  very 
  

   marked, 
  Experience 
  has 
  enabled 
  the 
  fish 
  culturists 
  to 
  

   improve 
  upon 
  the 
  old 
  styles 
  of 
  boxes 
  and 
  troughs, 
  and 
  the 
  

   hatching 
  of 
  eggs 
  of 
  additional 
  species 
  has 
  necessitated 
  

   the 
  invention 
  of 
  new 
  forms. 
  

  

  "The 
  improvements 
  in 
  apparatus 
  for 
  heavy 
  eggs, 
  like 
  

   those 
  of 
  the 
  trout 
  and 
  salmon, 
  have 
  been 
  chiefly 
  in 
  the 
  

   direction 
  of 
  economy 
  of 
  space 
  and 
  convenience 
  of 
  handling. 
  

   The 
  hatching-box 
  used 
  by 
  Dr. 
  Garlick, 
  a 
  simple 
  rectangular 
  

   trough, 
  was 
  soon 
  replaced 
  by 
  the 
  glass 
  grill, 
  introduced 
  

   from 
  Europe. 
  Later 
  still 
  came 
  the 
  Clark 
  trough, 
  Holton 
  

   box, 
  Atkins' 
  trough, 
  Stone 
  basket, 
  and 
  Ferguson 
  jar. 
  

   Models 
  of 
  each 
  of 
  these 
  may 
  be 
  seen 
  in 
  the 
  United 
  States 
  

   Department 
  at 
  the 
  Fisheries 
  Exhibition. 
  

  

  " 
  Semi-buoyant 
  eggs, 
  like 
  those 
  of 
  the 
  shad 
  and 
  white-fish, 
  

   are 
  treated 
  in 
  a 
  manner 
  peculiarly 
  Trans-Atlantic. 
  The 
  

   first, 
  and 
  for 
  some 
  years 
  the 
  only 
  apparatus 
  employed, 
  was 
  

   the 
  floating 
  box, 
  invented 
  by 
  Seth 
  Green. 
  Next 
  came 
  the 
  

   Bryan 
  box, 
  and 
  later 
  the 
  Bell 
  and 
  Mather 
  cone, 
  Chase's 
  

   jar, 
  Clark's 
  jar, 
  Ferguson's 
  bucket, 
  McDonald's 
  jar, 
  and 
  

   Bower's 
  trough. 
  

  

  "Adhesive 
  eggs, 
  like 
  those 
  of 
  the 
  smelt, 
  herring, 
  and 
  

   perch, 
  are 
  successfully 
  hatched 
  in 
  the 
  Ricardo 
  and 
  Clark 
  

   boxes, 
  and 
  their 
  manipulation 
  is 
  greatly 
  facilitated 
  by 
  the 
  

   aid 
  of 
  the 
  McDonald 
  egg-reel. 
  Floating 
  eggs, 
  including 
  

  

  C 
  

  

  