﻿Vlll 
  CONTENTS. 
  

  

  Numlber 
  282. 
  

  

  Page 
  

  

  Art. 
  XXVI. 
  — 
  Classification 
  of 
  the 
  Cycadophyta; 
  by 
  G. 
  R. 
  

  

  Wieland 
  391 
  

  

  Art. 
  XXYII.— 
  The 
  Chert 
  of 
  the 
  Wreford 
  and 
  Foraker 
  Lime- 
  

   stones 
  along 
  the 
  State 
  Line 
  of 
  Kansas 
  and 
  Oklahoma; 
  by 
  

   W. 
  H. 
  Twenhofel 
  407 
  

  

  Art. 
  XXVIII. 
  — 
  A 
  New 
  Synthesis 
  of 
  Phosgenite; 
  by 
  H. 
  A. 
  

  

  Hamor 
  and 
  H. 
  E. 
  Gill 
  430 
  

  

  Art. 
  XXIX. 
  — 
  A 
  Neglected 
  Factor 
  in 
  the 
  Rounding 
  of 
  Sand 
  

  

  Grains 
  ; 
  by 
  E. 
  M. 
  Kindle 
  431 
  

  

  Art. 
  XXX. 
  — 
  Notes 
  on 
  a 
  Specimen 
  of 
  Stylemys 
  nebracensis 
  

  

  (Leidy) 
  ; 
  by 
  E. 
  C. 
  Case 
  435 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  Physics 
  — 
  Gravimetric 
  and 
  Volumetric 
  Determination 
  of 
  Mor- 
  

   cury 
  Precipitated 
  as 
  Mercury 
  Zinc 
  Thiocyanate, 
  G. 
  S. 
  Jamieson, 
  438. 
  — 
  

   Chemical 
  Calculations, 
  R. 
  H. 
  Ashley, 
  439. 
  — 
  Quantitative 
  Analysis, 
  E. 
  G. 
  

   Mahin, 
  440. 
  — 
  Catalytic 
  Hydrogenation 
  and 
  Reduction, 
  E. 
  B. 
  Maxted 
  : 
  

   The 
  Dispersion 
  of 
  Diamond, 
  L. 
  Silberstein, 
  441. 
  — 
  Resonance 
  Radiation 
  

   of 
  Sodium 
  Vapor, 
  F. 
  D. 
  Mohler, 
  R. 
  W. 
  Wood, 
  442.— 
  The 
  Stark-Lo 
  

   Surdo 
  Effect 
  in 
  Nitrogen 
  and 
  Oxygen, 
  U. 
  Yoshida, 
  443. 
  — 
  Principles 
  

   Underlying 
  Radio 
  Communication, 
  444. 
  

  

  Geology 
  and 
  Mineralogy 
  — 
  The 
  Trias 
  of 
  New 
  Zealand, 
  C. 
  T. 
  Trechman, 
  445. 
  — 
  

   Seasonal 
  deposition 
  in 
  aqueo-glacial 
  sediments, 
  R. 
  W. 
  Sayles 
  : 
  New- 
  

   Mineral 
  Names, 
  W. 
  E. 
  Ford, 
  446. 
  — 
  Kimberley 
  Diamonds, 
  especially 
  Clear- 
  

   age 
  Diamonds, 
  J. 
  R. 
  Sutton 
  : 
  Tear-Figures 
  on 
  certain 
  Minerals, 
  M. 
  

   Kuhara, 
  448. 
  — 
  A 
  Meteorite 
  from 
  Tertiary 
  Deposits: 
  The 
  Living 
  Cycads, 
  

   C. 
  J. 
  Chamberlain, 
  449. 
  

  

  Miscellaneous 
  Scientific 
  Intelligence 
  —Year 
  Book, 
  Carnegie 
  Institution 
  of 
  Wash- 
  

   ington, 
  R. 
  S. 
  Woodward, 
  450. 
  — 
  National 
  Academy 
  of 
  Sciences 
  : 
  Field 
  

   Museum 
  of 
  Natural 
  History, 
  F. 
  J. 
  V. 
  Skiff, 
  451 
  — 
  Bureau 
  of 
  American 
  

   Ethnology, 
  F. 
  W. 
  Hodge: 
  Memoirs 
  of 
  the 
  Queensland 
  Museum, 
  H. 
  A. 
  

   Longman 
  : 
  The 
  Elementary 
  Nervous 
  System, 
  G. 
  H. 
  Parker 
  : 
  Outlines 
  of 
  

   Economic 
  Zoology, 
  A. 
  M. 
  Reese, 
  452. 
  — 
  Class-book 
  of 
  Economic 
  Entomol- 
  

   ogy, 
  with 
  special 
  reference 
  to 
  the 
  Economic 
  Insects 
  of 
  the 
  Northern 
  United 
  

   States 
  and 
  Canada, 
  W. 
  Lochhead, 
  453. 
  

  

  Obituary— 
  J. 
  Barrell 
  : 
  C. 
  B. 
  Richards 
  : 
  J. 
  W. 
  Baird 
  : 
  G. 
  C. 
  Worthen 
  : 
  

   A. 
  A. 
  Julien 
  : 
  W. 
  Crookes 
  : 
  M. 
  J. 
  Danne 
  : 
  L. 
  M. 
  Lambe 
  : 
  R. 
  Blanch- 
  

   ard 
  : 
  K. 
  H. 
  von 
  Bardeleben, 
  454. 
  

  

  Index, 
  455. 
  

  

  