﻿MENHADEN 
  INDUSTRY 
  OF 
  THE 
  ATLANTIC 
  COAST, 
  21 
  

  

  usually 
  runs 
  10 
  to 
  12 
  units. 
  Several 
  of 
  the 
  menhaden 
  factories 
  have 
  

   established 
  their 
  own 
  fertihzer 
  plants 
  and 
  market 
  all 
  of 
  their 
  fish 
  

   scrap 
  combined 
  with 
  other 
  fertihzer 
  materials 
  under 
  their 
  private 
  

   brand 
  names. 
  Acidulated 
  scrap 
  is 
  generally 
  shipped 
  in 
  bulk 
  in 
  ves- 
  

   sels, 
  but 
  the 
  dried 
  scrap 
  is 
  usually 
  handled 
  in 
  bags, 
  which 
  are 
  furnished 
  

   by 
  the 
  mixing 
  plants 
  to 
  which 
  it 
  has 
  been 
  sold. 
  - 
  The 
  bags 
  are 
  mostly 
  

   secondhand 
  and 
  of 
  no 
  particular 
  size 
  or 
  quality. 
  Some 
  years 
  ago 
  

   farmers 
  hving 
  in 
  the 
  vicinity 
  of 
  the 
  fish 
  factories 
  frequently 
  used 
  the 
  

   crude 
  or 
  green 
  scrap 
  for 
  fertiUzing 
  their 
  land, 
  but 
  that 
  custom 
  has 
  

   been 
  practically 
  abandoned 
  during 
  recent 
  years. 
  

  

  During 
  the 
  year 
  1912 
  there 
  were 
  manufactured 
  50,885 
  tons 
  of 
  dry 
  

   scrap, 
  valued 
  at 
  $1,532,994; 
  37,536 
  tons 
  of 
  acidulated 
  scrap, 
  valued 
  

   at 
  $603,446; 
  and 
  99 
  tons 
  of 
  green 
  scrap, 
  valued 
  at 
  $1,725. 
  

  

  In 
  the 
  endeavor 
  to 
  eliminate 
  the 
  obnoxious 
  odor 
  emanatmg 
  from 
  

   the 
  hot-air 
  drier, 
  one 
  of 
  the 
  factory 
  men 
  has 
  evolved 
  the 
  idea 
  of 
  build- 
  

   ing 
  a 
  frame 
  shed 
  immediately 
  back 
  of 
  and 
  of 
  a 
  similar 
  size 
  to 
  the 
  

   brick 
  chamber 
  or 
  chimney 
  referred 
  to 
  above 
  and 
  closing 
  the 
  top 
  of 
  

   the 
  chimney 
  so 
  that 
  the 
  dust 
  and 
  vapor 
  can 
  not 
  escape 
  at 
  that 
  point, 
  

   but 
  must 
  pass 
  on 
  through 
  a 
  passageway 
  into 
  the 
  shed. 
  In 
  this 
  shed, 
  

   which 
  may 
  be 
  called 
  a 
  condensing 
  house, 
  is 
  a 
  series 
  of 
  vertical 
  baffles 
  

   over 
  which 
  are 
  arranged 
  perforated 
  water 
  pipes; 
  the 
  water 
  sprinkled 
  

   from 
  these 
  pipes 
  condenses, 
  to 
  some 
  degree, 
  the 
  vapor 
  as 
  it 
  enters 
  

   and 
  circulates 
  through 
  the 
  building 
  and 
  also 
  dampens 
  the 
  dust 
  and 
  

   prevents 
  it 
  blowing 
  over 
  the 
  neighborhood. 
  The 
  water 
  is 
  carried 
  off 
  

   through 
  an 
  outlet 
  in 
  the 
  floor. 
  

  

  OIL. 
  

  

  The 
  oily 
  and 
  aqueous 
  hquid 
  flows 
  from 
  the 
  press 
  to 
  the 
  floor, 
  which 
  

   is 
  made 
  of 
  concrete 
  in 
  most 
  of 
  the 
  recently 
  built 
  plants, 
  and 
  on 
  to 
  a 
  

   trough 
  leadmg 
  out 
  to 
  the 
  tanks 
  where 
  the 
  separating 
  is 
  accomplished. 
  

   It 
  first 
  passes 
  through 
  the 
  receiving 
  tank, 
  where 
  a 
  considerable 
  quan- 
  

   tity 
  of 
  the 
  soHd 
  matter 
  forced 
  from 
  the 
  press 
  with 
  the 
  liquid 
  is 
  pre- 
  

   cipitated 
  and 
  drawn 
  off 
  through 
  an 
  openmg 
  in 
  the 
  bottom 
  of 
  the 
  tank. 
  

   The 
  water 
  and 
  oil 
  are 
  separated 
  here 
  to 
  some 
  degree. 
  

  

  As 
  the 
  liquid 
  flows 
  through 
  the 
  series 
  of 
  tanks 
  the 
  separation 
  is 
  

   made 
  more 
  complete 
  in 
  each 
  one; 
  it 
  may 
  flow 
  directly 
  over 
  the 
  edge 
  

   of 
  one 
  tank 
  into 
  the 
  next 
  or 
  into 
  a 
  trough 
  built 
  on 
  the 
  inside 
  of 
  the 
  

   tank 
  along 
  the 
  side 
  next 
  to 
  the 
  one 
  to 
  receive 
  the 
  oil; 
  the 
  latter 
  

   arrangement 
  is 
  sometimes 
  called 
  a 
  ''seK-skimmer." 
  As 
  an 
  aid 
  m 
  

   forcing 
  the 
  oil 
  to 
  the 
  surface 
  and 
  out, 
  an 
  additional 
  supply 
  of 
  water 
  

   is 
  sometimes 
  let 
  into 
  the 
  tanks 
  through 
  a 
  hose, 
  the 
  open 
  end 
  of 
  which 
  

   is 
  placed 
  near 
  the 
  bottom 
  so 
  as 
  to 
  avoid 
  disturbing 
  the 
  surface. 
  Hot 
  

   water 
  is 
  preferable 
  for 
  this 
  purpose, 
  because 
  when 
  cold 
  it 
  chills 
  

   the 
  oil. 
  Another 
  method, 
  used 
  chiefly 
  in 
  drawmg 
  the 
  oil 
  from 
  

   the 
  cooking 
  tanks, 
  is 
  the 
  use 
  of 
  a 
  jointed 
  iron 
  pipe, 
  called 
  the 
  

  

  