﻿M,- 
  

  

  \.i 
  

  

  ^^S^' 
  

  

  :i 
  

  

  New 
  Series, 
  No. 
  192 
  (Vol. 
  48, 
  Part 
  4). 
  

  

  FEBEUAKY, 
  ]905. 
  

   THE 
  

  

  Price 
  10s. 
  net. 
  

  

  QUARTERLY 
  JOURNAL 
  

  

  OF 
  

  

  MICROSCOPICAL 
  SCIENCE. 
  

  

  EUIIKI) 
  HY 
  

  

  E. 
  KAY 
  LANKESTER, 
  M.A., 
  LL.D., 
  F.li.S., 
  

  

  HONOKARY 
  FKM.OW 
  OF 
  EXGTBK 
  C 
  O 
  M.EGE 
  , 
  OX 
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  1' 
  t' 
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  \ 
  N 
  t 
  K 
  

  

  A>D 
  (IK 
  TIIK 
  IMTKRIAI. 
  AC.IDEMY 
  OF 
  SCIKNCES 
  OV 
  ST. 
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  AND 
  OK 
  TIIF, 
  ACAUK.MY 
  

  

  OF 
  SCIENCES 
  OF 
  P 
  H 
  I 
  I.A 
  DKI.F 
  H 
  I 
  A 
  1 
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  SCIENCES 
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  N 
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  AM» 
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  ACADEMY 
  OP 
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  HONORAftY 
  MEMBKH 
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  THE 
  

  

  NEW 
  YORK 
  ACADEMY 
  OF 
  SCIENCES, 
  AND 
  OF 
  THE 
  

  

  CAMBRIDGE 
  P 
  M 
  1 
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  IMII 
  CAL 
  SOCIETY, 
  AN!) 
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  THE 
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  PHYSICAL 
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  BURGH 
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  FOREIGN 
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  MEMBER 
  OF 
  

  

  THE 
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  H 
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  ICA 
  I. 
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  DIRRCTOKOF 
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  PRnFKS!!((K 
  OK 
  PHYSIOLOGY 
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  ; 
  

  

  lATK 
  LINACRli 
  PROFESSOR 
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  WITH 
  THE 
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  OF 
  

  

  ADAM 
  SEDGWICK, 
  M.A., 
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  FRLI.OW 
  AND 
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  COLLEGE, 
  CAMbltlllGR; 
  

  

  W. 
  F. 
  R. 
  WELDON, 
  M.A., 
  F.R.S., 
  

  

  SYDNEY 
  J. 
  HICKSON, 
  M.A., 
  F.K.S., 
  

  

  BEYER 
  PROFESSOR 
  OF 
  ZOOLOGY 
  IN 
  THE 
  OWENS 
  COLLKf:K, 
  ?l 
  A 
  N 
  f 
  H 
  ES 
  r 
  K 
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  . 
  

  

  WITH 
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  LONDON 
  : 
  

   J. 
  & 
  A. 
  CHURCHILL, 
  7 
  GREAT 
  MARLBOROUGH 
  STREET. 
  

  

  1905. 
  

  

  Adlard 
  and 
  Son,] 
  

  

  [London 
  and 
  Dc^rking 
  

  

  