﻿AUC 
  ig 
  

  

  1904 
  

  

  New 
  Series, 
  No. 
  189 
  

  

  3 
  (Vol. 
  48, 
  

  

  Part 
  11 
  

  

  Price 
  10s. 
  

  

  JULY, 
  1904. 
  

   THE 
  

  

  QUARTERLY 
  JOURNAL 
  

  

  OK 
  

  

  MICROSCOPICAL 
  SCIENCE. 
  

  

  EDITKO 
  HY 
  

  

  E. 
  RAY 
  LANKESTEK, 
  M.A., 
  LL.D., 
  F.R.S., 
  

  

  HONOUAKY 
  FKLI.OW 
  OF 
  EXETER 
  COLLEGE 
  , 
  OXFORD 
  ; 
  COB 
  It 
  ESPON 
  DE.NT 
  OF 
  THE 
  INSTITUTE 
  OK 
  F 
  U 
  A 
  > 
  C 
  K 
  

   AND 
  OF 
  THE 
  IMPERIAL 
  ACADEMY 
  OF 
  SCIENCES 
  OP 
  ST. 
  PKTEKSBURG, 
  AND 
  OF 
  THE 
  ACADEMY 
  

   OF 
  SCIENCES 
  OF 
  PHILADELPHIA; 
  KORKIGN 
  MEMBBR 
  OK 
  THE 
  ROYAL 
  SOCIETY 
  OF 
  

   SCIENCES 
  OF 
  GOTTINGEX 
  AND 
  OF 
  TH 
  E 
  RO 
  Y 
  AL 
  BO 
  U 
  E 
  MI 
  A 
  N 
  SOCIETY 
  OF 
  SCIENCES, 
  

   AND 
  OF 
  THE 
  ACADEMY 
  OF 
  THE 
  LINCEI 
  OF 
  HOME, 
  AND 
  OF 
  THR 
  AMERICAN 
  

   ACADEMY 
  OF 
  ARTS 
  AND 
  SCIENCES 
  OF 
  BOSTON 
  ; 
  ASSOCIATE 
  OK 
  THE 
  

   ROYAL 
  ACADEMY 
  OF 
  BELGIUM; 
  HONORARY 
  MEMBER 
  OF 
  TUK 
  

   NEW 
  -YORK 
  ACADEMY 
  OF 
  SCIENCES, 
  AND 
  OF 
  THE 
  

   CAMBRIDGE 
  PHILOSOPHICAL 
  SOCIETY, 
  AND 
  OF 
  

   THE 
  ROYAL 
  PHYSICAL 
  SOCIETY 
  OF 
  EDIN- 
  

   BURGH 
  ; 
  HONORARY 
  MEMBER 
  OF 
  THE 
  

   BIOLOGICAL 
  SOCIETY 
  OF 
  PARIs; 
  

   FOREIGN 
  ASSOCIATE 
  OF 
  THE 
  NATIONAL 
  ACADEMY 
  OF 
  SCIENCES. 
  U.S., 
  AND 
  MEMBER 
  OF 
  

   THE 
  AMERICAN 
  PHILOSOPHICAL 
  SOCIETY 
  ; 
  

   DIRECTOR 
  OF 
  THE 
  NATURAL 
  HISTORY 
  DEPARTMENTS 
  OF 
  THE 
  BRITISH 
  MUSEUM; 
  LATE 
  FULLKUIAN 
  

   PHdFESSon 
  OK 
  PHYSIOLOGY 
  IN 
  THE 
  ROYAL 
  INSTITUTION 
  OF 
  GREAT 
  HRITAIN 
  ; 
  

   LATE 
  LINACRE 
  PROFESSOR 
  OF 
  COMPARATIVE 
  ANATOMY 
  AND 
  FELLOW 
  OF 
  MERTON 
  COLLEGE, 
  OXFORD. 
  

  

  WITH 
  THE 
  CO-OPEKATION 
  OF 
  

  

  ADAM 
  SEDGWICK, 
  M.A., 
  F.R.S. 
  , 
  

  

  FELLOW 
  AND 
  TUTOR 
  OF 
  THINIIV 
  COLLEGE, 
  CAMBRIDGE; 
  

  

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

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

  

  BEYER 
  PROFESSOR 
  OF 
  ZOOLOGY 
  IN 
  THE 
  OWENS 
  COLLEGE, 
  M 
  ANCHESTK 
  R. 
  

  

  WITH 
  LITHOGRAPHIC 
  PLATES 
  AND 
  ENGRAVINGS 
  ON 
  WOOD. 
  

  

  LONDON 
  : 
  

  

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

  

  1904. 
  

  

  Adlardand 
  Son,] 
  

  

  [London 
  and 
  Dorking 
  

  

  