﻿CONTENTS 
  

   Original 
  Papers 
  

  

  Page 
  

   Mathematics. 
  — 
  Values 
  of 
  sine 
  6 
  and 
  cosine 
  6 
  to 
  33 
  places 
  of 
  decimals. 
  C. 
  E. 
  Van 
  

  

  Orstrand 
  and 
  Marvin 
  A. 
  Shoitltes 
  423 
  

  

  Botany. 
  — 
  Ferns 
  new 
  to 
  the 
  Cuban 
  flora. 
  Wilwam 
  R. 
  MAxon 
  437 
  

  

  Proceedings 
  

   Botanical 
  Society 
  444 
  

  

  Scientific 
  Notes 
  and 
  News 
  ' 
  445 
  

  

  OFFICERS 
  OF 
  THE 
  ACADEMY 
  

   President: 
  W. 
  J. 
  Humphreys, 
  Weather 
  Bureau. 
  

   Corresponding 
  Secretary: 
  FrancIvS 
  B. 
  Silsbee, 
  Bureau 
  of 
  Standards. 
  

   Recording 
  Secretary: 
  Wilijam 
  R. 
  Maxon, 
  National 
  Museum. 
  

   Treasurer: 
  R. 
  L. 
  Faris, 
  Coast 
  and 
  Geodetic 
  Survey. 
  

  

  