﻿46 
  

  

  REPORT 
  OF 
  COMMISSIONER 
  OF 
  FISH 
  AND 
  FISHERIES. 
  

  

  [44] 
  

  

  same 
  amount 
  to 
  the 
  eastward 
  on 
  a 
  S. 
  by 
  W. 
  course, 
  the 
  disturbance 
  de- 
  

   creasing 
  eastward 
  and 
  westward 
  from 
  those 
  points 
  to 
  nothing 
  at 
  east 
  

   and 
  west, 
  where 
  the 
  needle 
  points 
  to 
  or 
  from 
  the 
  disturbing 
  element, 
  

   and 
  "when 
  the 
  two 
  are 
  in 
  approximately 
  the 
  plane 
  of 
  the 
  same 
  magnetic 
  

   meridian. 
  

  

  The 
  davit 
  in 
  question 
  is 
  in 
  metallic 
  connection 
  with 
  the 
  hull 
  of 
  the 
  

   ship, 
  and 
  through 
  it 
  with 
  the 
  earth. 
  The 
  upper 
  part, 
  beginning 
  about 
  on 
  

   a 
  level 
  with 
  the 
  compass 
  card, 
  curves 
  with 
  a 
  radius 
  of 
  about 
  five 
  feet, 
  and 
  

   when 
  swung 
  outboard 
  has 
  a 
  general 
  direction 
  pointing 
  exactly 
  from 
  the 
  

   compass 
  ; 
  when 
  rigged 
  in 
  its 
  general 
  trend 
  is 
  not 
  far 
  from 
  normal 
  to 
  the 
  

   line 
  of 
  shortest 
  distance 
  to 
  the 
  compass. 
  In 
  the 
  latter 
  position, 
  although 
  

   so 
  much 
  nearer 
  to 
  the 
  needle, 
  it 
  has 
  apparently 
  no 
  special 
  influence 
  

   upon 
  it, 
  the 
  deviations 
  making 
  a 
  fair 
  curve. 
  

  

  The 
  methods 
  employed 
  in 
  navigating 
  were 
  as 
  described 
  and 
  illustrated 
  

   in 
  preceding 
  reports. 
  

  

  EEPOET 
  OF 
  PASSED 
  ASSISTANT 
  EXGIKEEE 
  G. 
  W. 
  BAIED,, 
  

  

  U. 
  S. 
  K 
  

  

  MAIN 
  ENGINES. 
  

  

  During 
  the 
  year 
  the 
  ship 
  has 
  steamed 
  13,240.26 
  miles 
  on 
  her 
  course* 
  

   besides 
  the 
  time 
  the 
  engines 
  have 
  been 
  worked 
  for 
  sounding 
  and 
  dredg- 
  

   ing. 
  The 
  ship 
  has 
  been 
  at 
  sea 
  one 
  hundred 
  and 
  thirty 
  days, 
  and 
  has 
  

   not 
  been 
  detained 
  in 
  port 
  through 
  any 
  mishap 
  or 
  accident 
  to 
  steam 
  

   machinery. 
  The 
  casualties 
  have 
  been 
  few. 
  The 
  out-board 
  blow-valve 
  

   chamber 
  was 
  found 
  to 
  be 
  corroded 
  through 
  in 
  April; 
  we 
  put 
  a 
  pine 
  plug 
  

  

  Fig. 
  l. 
  

  

  in 
  the 
  opening 
  while 
  at 
  Key 
  West, 
  and 
  after 
  our 
  return 
  to 
  Washington 
  

   we 
  listed 
  the 
  ship 
  to 
  bring 
  the 
  valve 
  above 
  water, 
  when 
  we 
  put 
  in 
  a 
  

   new 
  valve. 
  To 
  prevent 
  further 
  corrosion, 
  we 
  placed 
  a 
  zinc 
  ferrule 
  in 
  the 
  

   neck. 
  The 
  soft-rubber 
  valves 
  in 
  the 
  air-pump 
  were 
  found 
  to 
  curl 
  up 
  from 
  

  

  