﻿UPON 
  THE 
  

  

  Development 
  of 
  the 
  Shad. 
  

  

  Alosa 
  Sapidissima 
  ('). 
  

  

  11. 
  J. 
  RICE, 
  B. 
  Sc. 
  CoiJNELL, 
  

  

  i'ellow 
  In 
  ^at. 
  §ist. 
  Johns 
  ffopklns 
  .Ucir. 
  

  

  Mr. 
  T. 
  B. 
  Feugusoh, 
  

  

  Commissioner 
  of 
  Fisheries 
  State 
  of 
  Maryland. 
  

  

  Sir 
  : 
  — 
  The 
  headquarters 
  of 
  the 
  Commission, 
  for 
  the 
  pur- 
  

   pose 
  of 
  hatching 
  Shad 
  spawn, 
  had 
  been 
  established 
  (May, 
  

   1877) 
  in 
  Carrot 
  cove, 
  on 
  the 
  Northeast 
  river, 
  just 
  across 
  the 
  

   fiats, 
  east 
  from 
  the 
  village 
  of 
  Havre 
  de 
  Grace, 
  Maryland. 
  

   The 
  headquarters 
  consisted 
  of 
  two 
  large 
  covered 
  barges, 
  one 
  

   of 
  which 
  served 
  as 
  a 
  lodging 
  house 
  for 
  the 
  men 
  employed 
  by 
  

   the 
  Commission 
  in 
  manipulating 
  the 
  spawn 
  ; 
  the 
  other 
  as 
  an 
  

   engine 
  house, 
  to 
  contain 
  the 
  machinery 
  used 
  in 
  working 
  the 
  

   hatching 
  apparatus. 
  

  

  This 
  hatching 
  apparatus 
  consisted 
  of 
  a 
  series 
  of 
  cylindrical 
  

   sheet-iron 
  buckets, 
  with 
  wire 
  seive 
  bottoms, 
  attached 
  to 
  arms 
  

   worked 
  vertically 
  by 
  an 
  engine 
  situated 
  within 
  the 
  barge. 
  

   The 
  arms 
  were 
  in 
  sets, 
  one 
  upon 
  each 
  side 
  of 
  the 
  barge, 
  and 
  

   extended 
  out 
  from 
  the 
  sides 
  of 
  the 
  barge 
  and 
  over 
  the 
  water, 
  

   about 
  three 
  and 
  one-half 
  feet. 
  The 
  buckets 
  were 
  attached 
  

   to 
  stringers, 
  connecting 
  the 
  over-hanging 
  arms, 
  in 
  one 
  or 
  

   two 
  rows 
  on 
  each 
  side 
  the 
  barge, 
  and 
  as 
  close 
  together 
  as 
  

   they 
  could 
  be 
  conveniently 
  fastened. 
  They 
  were 
  so 
  placed 
  

   that 
  when 
  the 
  arms 
  were 
  raised 
  to 
  their 
  highest 
  point 
  the 
  

  

  