﻿PLATM 
  V. 
  

  

  [The 
  figures 
  represented 
  iu 
  this 
  Plate 
  were 
  from 
  batched 
  epccimeus, 
  and 
  

   were, 
  excepting 
  the 
  adult 
  forms, 
  about 
  three-sixteenths 
  of 
  an 
  inch 
  in 
  length.] 
  

  

  Figs. 
  1 
  and 
  2— 
  Profile 
  and 
  dorsal 
  views 
  of 
  recently 
  hatched 
  

   Smelt. 
  All 
  the 
  organs 
  alread}' 
  described 
  can 
  be 
  

   made 
  otit 
  in 
  still 
  more 
  advanced 
  condition, 
  (papje 
  

   71.) 
  

  

  Fig. 
  ?»— 
  Diagram 
  of 
  first 
  blood-system 
  of 
  young 
  Smelt, 
  

   (page 
  73.) 
  The 
  first 
  and 
  third 
  pairs 
  of 
  branchial 
  

   vessels 
  are 
  not 
  represented 
  in 
  the 
  diagram, 
  since 
  

   they 
  are 
  often, 
  if 
  net 
  always, 
  formed 
  at 
  a 
  later 
  

   period. 
  

  

  Fig. 
  4 
  — 
  "V'ery 
  much 
  enlarged 
  view 
  of 
  young 
  Smelt, 
  at 
  a 
  po' 
  

   riod 
  ii 
  little 
  later 
  than 
  represented 
  in 
  Fig. 
  \, 
  

   (page 
  72.) 
  

  

  Fig. 
  5 
  — 
  Head 
  of 
  Smelt 
  at 
  timo 
  of 
  first 
  blood-system, 
  (page 
  

   72.) 
  

  

  Figs. 
  G 
  and 
  7 
  — 
  Views 
  of 
  fast 
  disappearing 
  yolk. 
  The 
  large 
  

   oil-sphere 
  is 
  in 
  the 
  centre 
  of 
  the 
  mass, 
  is 
  becom- 
  

   ing 
  very 
  much 
  smaller, 
  and 
  has 
  turned 
  of 
  a 
  

   brownish-yellow 
  color. 
  

  

  Fig. 
  S 
  — 
  Profile 
  view 
  of 
  adult 
  female 
  Smelt, 
  full 
  of 
  ova. 
  

   Raritan 
  river 
  form, 
  natural 
  size. 
  

  

  Fig. 
  9 
  — 
  Head 
  of 
  same, 
  with 
  extended 
  jaws. 
  

  

  Figs. 
  10 
  and 
  15 
  — 
  Stages 
  in 
  the 
  development 
  of 
  the 
  brain, 
  

   (page 
  71.) 
  

  

  Fig. 
  11a 
  — 
  Scale, 
  much 
  enlarged, 
  from 
  above 
  lateral 
  line 
  of 
  

   Raritan 
  river 
  fish, 
  b 
  — 
  same, 
  natural 
  size. 
  

  

  Fig. 
  12 
  — 
  Head 
  of 
  Northern 
  Smelt 
  

  

  Figs. 
  13 
  and 
  IC 
  — 
  Dorsal 
  viewf- 
  of 
  Raritan 
  river 
  and 
  North- 
  

   ern 
  Smelts. 
  

  

  Fig. 
  14 
  — 
  Brain 
  of 
  Raritan 
  river 
  tisli, 
  natural 
  size. 
  

  

  