﻿Dhas 
  D. 
  Walcott, 
  

  

  U. 
  S. 
  Geol. 
  Survey. 
  x. 
  

  

  V^OL. 
  YIIL 
  AUGrST, 
  1899. 
  

  

  Established 
  by 
  BENJAMIN 
  SILLIMAN 
  in 
  1818. 
  

   THE 
  

  

  AMERICAN 
  

  

  JOURNAL 
  OF 
  SCIENCE. 
  

  

  Editor: 
  EDWARD 
  S. 
  DANA. 
  

  

  ASSOCIATE 
  EDITORS 
  

  

  Professors 
  GEO. 
  L. 
  GOOD 
  ALE, 
  JOHN 
  TROWBRIDGE, 
  

   H. 
  P. 
  BOWDITCR 
  AND 
  \y. 
  G. 
  FARLOW, 
  of 
  Cambridge, 
  

  

  Professors 
  A. 
  E. 
  VERKILL, 
  HENRY 
  k 
  WILLIAMS, 
  and 
  

   L. 
  V. 
  PIRSSON, 
  OF 
  New 
  IIayex, 
  

  

  Professor 
  GEORGE 
  F. 
  BARKER, 
  of 
  Philadelphia, 
  

   Professor 
  H. 
  A. 
  ROWLAND, 
  of 
  Baltimore, 
  

   Mr. 
  J. 
  S. 
  DILLER, 
  of 
  Washingtox. 
  

  

  FOURTH 
  SERIES. 
  

   VOL. 
  YIII— 
  [WHOLE 
  NUMBER, 
  CLAaiL] 
  

  

  No. 
  44.— 
  AUGUST, 
  1899. 
  

  

  PLATES 
  II-III. 
  

  

  NEW 
  HAYEN, 
  CONNECTICUT. 
  

  

  1 
  S 
  9 
  9 
  . 
  

  

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