﻿MENHADEN 
  INDUSTRY 
  OP 
  THE 
  ATLANTIC 
  COAST. 
  19 
  

  

  is 
  controlled 
  by 
  this 
  cone 
  and 
  the 
  pressure 
  applied 
  to 
  the 
  material 
  

   while 
  in 
  the 
  press 
  is 
  thus 
  regulated. 
  The 
  oil 
  and 
  water 
  collect 
  

   beneath 
  the 
  press 
  on 
  the 
  floor, 
  which 
  is 
  made 
  of 
  concrete 
  in 
  many 
  

   of 
  the 
  factories, 
  and 
  runs 
  through 
  troughs 
  or 
  pipes 
  to 
  the 
  oil 
  tanks 
  

   for 
  further 
  treatment. 
  According 
  to 
  the 
  information 
  available, 
  there 
  

   are 
  4 
  pounds 
  of 
  oil, 
  46 
  pounds 
  of 
  water, 
  and 
  50 
  pounds 
  of 
  scrap 
  in 
  

   100 
  pounds 
  of 
  the 
  material 
  as 
  it 
  leaves 
  the 
  press. 
  

  

  DRYING. 
  

  

  Under 
  the 
  old 
  method 
  of 
  drying, 
  the 
  scrap 
  is 
  spread 
  on 
  a 
  plat- 
  

   form 
  made 
  of 
  closely 
  fitting 
  boards 
  or 
  concrete, 
  where 
  it 
  is 
  exposed 
  

   to 
  the 
  sun 
  and 
  air, 
  two 
  or 
  three 
  days 
  usually 
  being 
  sufficient 
  time 
  for 
  

   this 
  form 
  of 
  drying 
  when 
  the 
  weather 
  is 
  favorable. 
  The 
  scrap 
  is 
  

   turned 
  over 
  or 
  stirred 
  frequently 
  so 
  that 
  it 
  may 
  all 
  become 
  thoroughly 
  

   dried; 
  the 
  instrument 
  used 
  for 
  this 
  purpose 
  is 
  usually 
  a 
  wood-tooth 
  

   harrow 
  drawn 
  by 
  a 
  horse. 
  In 
  the 
  event 
  of 
  rain 
  and 
  at 
  night, 
  as 
  

   protection 
  from 
  the 
  dew, 
  the 
  scrap 
  is 
  collected 
  into 
  heaps 
  and 
  covered 
  

   with 
  tarpaulin. 
  

  

  The 
  hot-air 
  drier 
  is 
  now 
  almost 
  universally 
  used 
  in 
  meahaden 
  

   factories. 
  At 
  some 
  few 
  points, 
  because 
  of 
  the 
  strenuous 
  protest 
  of 
  

   summer 
  residents 
  against 
  the 
  disagreeable 
  odor 
  emitted 
  by 
  the 
  hot- 
  

   air 
  drier, 
  the 
  scrap 
  is 
  treated 
  with 
  crude 
  sulphuric 
  acid 
  and 
  sold 
  as 
  

   ''acidulated 
  scrap"; 
  or 
  in 
  some 
  cases 
  it 
  is 
  dried 
  during 
  the 
  winter 
  

   after 
  the 
  departure 
  of 
  the 
  summer 
  residents. 
  The 
  acid 
  is 
  usually 
  

   applied 
  as 
  the 
  scrap 
  is 
  being 
  conveyed 
  to 
  the 
  shed 
  in 
  which 
  the 
  

   acidulated 
  scrap 
  is 
  stored; 
  it 
  may 
  flow 
  in 
  a 
  small 
  stream 
  from 
  a 
  

   lead-lined 
  tank 
  set 
  near 
  by, 
  or 
  may 
  be 
  poured 
  from 
  a 
  dipper 
  by 
  a 
  

   man 
  standing 
  near 
  the 
  conveyor 
  box. 
  The 
  estimated 
  quantity 
  used 
  

   is 
  1 
  to 
  1^ 
  gallons 
  to 
  500 
  pounds 
  of 
  scrap. 
  The 
  acid 
  dissolves 
  the 
  bone 
  

   and 
  also 
  preserves 
  the 
  scrap 
  by 
  preventing 
  the 
  development 
  of 
  flies 
  

   and 
  other 
  insects. 
  

  

  The 
  pressed 
  fish 
  remains 
  on 
  the 
  floor 
  of 
  the 
  room 
  below 
  the 
  press- 
  

   room, 
  where 
  it 
  is 
  deposited 
  after 
  leaving 
  the 
  presses, 
  until 
  the 
  follow- 
  

   ing 
  morning, 
  when 
  it 
  is 
  shoveled 
  to 
  a 
  conveyor, 
  usually 
  of 
  the 
  chain 
  

   type 
  with 
  wood 
  flights 
  placed 
  at 
  intervals 
  of 
  about 
  2 
  feet, 
  and 
  car- 
  

   ried 
  to 
  the 
  hopper 
  of 
  the 
  drier. 
  The 
  drier 
  is 
  generally 
  set 
  under 
  a 
  

   shed 
  built 
  apart 
  from 
  the 
  main 
  factory 
  building 
  as 
  a 
  precaution 
  

   against 
  setting 
  fire 
  to 
  the 
  building 
  should 
  the 
  intense 
  heat 
  in 
  the 
  

   drier 
  fire 
  the 
  scrap. 
  The 
  direct-heat 
  rotary 
  drier 
  is 
  a 
  revolving 
  

   cyluidrical 
  iron 
  or 
  steel 
  shell 
  of 
  various 
  sizes, 
  through 
  which 
  hot 
  

   furnace 
  gases 
  pass, 
  generally 
  under 
  forced 
  draft 
  produced 
  by 
  a 
  fan 
  

   at 
  the 
  side 
  of 
  the 
  furnace. 
  The 
  cylinder 
  has 
  12 
  spiral 
  ffights 
  or 
  

   shelves, 
  each 
  8 
  inches 
  wide, 
  attached 
  to 
  its 
  inner 
  surface 
  and 
  running 
  

   the 
  entire 
  length; 
  these 
  add 
  to 
  the 
  rigidity 
  of 
  the 
  cylinder 
  and 
  also 
  

   lift 
  the 
  scrap 
  to 
  the 
  liighest 
  point 
  of 
  the 
  rotation 
  and 
  shower 
  it 
  

  

  