﻿3^ 
  

  

  / 
  

  

  THE 
  

  

  AMERICAN 
  

  

  JOURNAL 
  OF 
  SCIENCE. 
  

  

  Editor: 
  EDWARD 
  S. 
  DANA. 
  

  

  ASSOCIATE 
  EDITORS 
  

  

  Professors 
  GEO. 
  L. 
  GOODALE, 
  JOHN 
  TROWBRIDGE, 
  

   H. 
  P. 
  BOWDITCH 
  and 
  W. 
  G. 
  FARLOW, 
  of 
  Cambridge. 
  

  

  Professors 
  H. 
  A. 
  NEWTON, 
  O. 
  C. 
  MARSH, 
  A. 
  E. 
  YERRILL 
  

   and 
  H. 
  S. 
  WILLIAMS, 
  of 
  New 
  Haven, 
  

  

  Professor 
  GEORGE 
  F. 
  BARKER, 
  of 
  Philadelphia. 
  

  

  THIRD 
  SERIES. 
  

  

  YOL. 
  XLIX— 
  [WHOLE 
  NUMBER, 
  CXLIX.] 
  

  

  Nos. 
  289—294. 
  

  

  JANUARY 
  TO 
  JUNE, 
  1895. 
  

  

  WITH 
  V 
  PLATES. 
  

  

  NEW 
  HAYEN, 
  CONNECTICUT. 
  

  

  1895. 
  

  

  