﻿64 
  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  several 
  months 
  old 
  are 
  sometimes 
  afflicted 
  with 
  a 
  similar 
  growth, 
  which 
  

   may 
  possibly 
  be 
  not 
  the 
  original 
  cause 
  of 
  the 
  disease, 
  but 
  only 
  an 
  

   attendant 
  symptom. 
  Such 
  an 
  attack 
  was 
  experienced 
  at 
  Craig 
  Brook 
  

   m 
  July, 
  1888. 
  The 
  fry 
  of 
  Atlantic 
  salmon 
  were 
  the 
  sufferers 
  and 
  the 
  

   mortality 
  was 
  considerable, 
  but 
  it 
  yielded 
  promptly 
  to 
  a 
  salt 
  bath. 
  

  

  The 
  occurrence 
  of 
  fungus 
  on 
  wounds, 
  even 
  on 
  such 
  as 
  result 
  from 
  

   the 
  abrasion 
  of 
  the 
  skin 
  or 
  the 
  loss 
  of 
  a 
  scale, 
  is 
  very 
  common, 
  but 
  such 
  

   cases 
  are 
  rarely 
  fatal, 
  though 
  no 
  remedy 
  be 
  applied. 
  The 
  only 
  serious 
  

   attack 
  of 
  fungus 
  on 
  adult 
  salmon 
  occurred 
  during 
  the 
  experimental 
  

   work 
  at 
  Ci-aig 
  Brook 
  in 
  1871. 
  The 
  first 
  inclosure 
  made 
  to 
  receive 
  the 
  

   breeding 
  fish 
  was 
  a 
  small 
  and 
  shallow 
  one, 
  made 
  by 
  damming 
  the 
  brook 
  

   itself 
  at 
  a 
  point 
  where 
  its 
  volume 
  consisted 
  of 
  about 
  30 
  per 
  cent 
  of 
  

   spring 
  water. 
  The 
  fish 
  had 
  suffered 
  considerably 
  from 
  the 
  handling 
  

   necessary 
  in 
  bringing 
  them 
  so 
  far 
  and 
  from 
  the 
  rough 
  character 
  of 
  the 
  

   experimental 
  cars 
  in 
  which 
  they 
  were 
  transported. 
  The 
  first 
  of 
  them 
  

   were 
  placed 
  in 
  the 
  inclosure 
  June 
  8. 
  On 
  the 
  12th 
  2 
  of 
  them 
  died, 
  on 
  

   the 
  13tli 
  2 
  more, 
  and 
  by 
  the 
  17th 
  14 
  were 
  dead 
  out 
  of 
  41 
  received; 
  by 
  

   the 
  20th 
  the 
  mortality 
  had 
  increased 
  to 
  such 
  a 
  point 
  that 
  it 
  became 
  

   evident 
  that 
  not 
  a 
  single 
  salmon 
  would 
  survive 
  unless 
  some 
  change 
  was 
  

   made 
  in 
  the 
  mode 
  of 
  confining 
  them, 
  and 
  they 
  were 
  all 
  removed 
  and 
  

   placed 
  in 
  other 
  quarters. 
  Nine 
  of 
  them, 
  already 
  so 
  badly 
  diseased 
  as 
  

   to 
  be 
  considered 
  hopeless 
  cases, 
  were 
  turned 
  loose 
  in 
  Craig 
  Pond, 
  and 
  

   part 
  of 
  these 
  recovered 
  and 
  spawned 
  in 
  the 
  autumn 
  following 
  on 
  a 
  

   gravelly 
  shore, 
  where 
  some 
  of 
  them 
  were 
  taken 
  and 
  found 
  to 
  bear 
  the 
  

   well-healed 
  scars 
  of 
  their 
  ugly 
  sores. 
  

  

  The 
  symptoms 
  noted 
  were 
  sluggishness 
  and 
  heedlessness; 
  an 
  inclina- 
  

   tion 
  to 
  swim 
  near 
  the 
  surface 
  of 
  the 
  water; 
  a 
  white, 
  filmy 
  appearance 
  

   of 
  the 
  eyes, 
  which 
  seemed 
  to 
  be 
  accompanied 
  or 
  followed 
  in 
  many 
  cases 
  

   by 
  blindness; 
  a 
  white 
  fungoid 
  growth 
  on 
  the 
  abraded 
  tips 
  of 
  the 
  fins 
  

   and 
  wherever 
  the 
  scales 
  had 
  been 
  rubbed 
  off; 
  white 
  blotches 
  breaking 
  

   out 
  on 
  all 
  parts 
  of 
  the 
  body, 
  even 
  where 
  there 
  had 
  been 
  no 
  mark 
  of 
  

   injury, 
  particularly 
  on 
  the 
  head, 
  proving 
  on 
  examination 
  to 
  be 
  patches 
  

   of 
  white 
  fungus, 
  which, 
  on 
  the 
  parts 
  of 
  the 
  body 
  covered 
  by 
  scales, 
  

   grew 
  underneath 
  the 
  latter 
  and 
  pushed 
  them 
  from 
  their 
  places. 
  

  

  Experiments 
  in 
  confining 
  salmon 
  in 
  other 
  waters 
  the 
  same 
  season 
  

   turned 
  out 
  successfully, 
  and 
  it 
  seems 
  that 
  the 
  most 
  important 
  condi- 
  

   tions 
  in 
  the 
  case 
  were 
  these: 
  The 
  area 
  of 
  the 
  fatal 
  inclosure 
  was 
  about 
  

   a 
  quarter 
  of 
  an 
  acre; 
  the 
  water 
  was 
  i^artly 
  from 
  springs 
  and 
  was 
  so 
  

   exceedingly 
  transparent 
  that 
  a 
  pin 
  dropped 
  into 
  it 
  could 
  be 
  readily 
  

   seen 
  at 
  a 
  depth 
  of 
  6 
  feet, 
  so 
  that 
  there 
  was 
  i>ractically 
  no 
  protection 
  

   from 
  the 
  rays 
  of 
  the 
  June 
  sun 
  ; 
  the 
  fish 
  had 
  been 
  transported 
  in 
  a 
  com- 
  

   mon 
  dory 
  with 
  holes 
  bored 
  in 
  the 
  bottom 
  to 
  admit 
  water, 
  a 
  very 
  inferior 
  

   sort 
  of 
  car 
  compared 
  with 
  those 
  now 
  in 
  use; 
  they 
  had 
  been 
  transported 
  

   a 
  long 
  distance 
  and 
  passed 
  three 
  separate 
  locks 
  and 
  had 
  finally 
  been 
  

   hauled 
  in 
  a 
  tub 
  on 
  a 
  cart 
  over 
  rough 
  ground 
  from 
  Alamoosook 
  Lake 
  to 
  

   the 
  iuclosure. 
  » 
  

  

  