﻿CONTENTS 
  

   Original 
  Papers 
  

  

  Page 
  

  

  Mineralogy. 
  — 
  A 
  worked 
  jade 
  pebble 
  from 
  Copan. 
  H. 
  S. 
  Washington 
  387 
  

  

  Botany. 
  — 
  Two 
  new 
  species 
  of 
  letterwood 
  (Piratinera) 
  . 
  S. 
  F. 
  Blake 
  391 
  

  

  Botany. 
  — 
  Diospyros 
  conzattii, 
  a 
  new 
  species 
  of 
  persimmon 
  from 
  Mexico. 
  Paul 
  C. 
  

  

  Standley 
  399 
  

  

  Botanv. 
  — 
  A 
  new 
  Salvinia 
  from 
  Trinidad. 
  William 
  R. 
  Maxon 
  400 
  

  

  Proceedings 
  

  

  Washington 
  Academy 
  of 
  Sciences 
  401 
  

  

  Philosophical 
  Society 
  403 
  

  

  OFFICERS 
  OF 
  THE 
  ACADEMY 
  

   President: 
  W. 
  J. 
  Humphreys, 
  Weather 
  Bureau. 
  

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

   Recording 
  Secretary: 
  William 
  R.JVIaxon, 
  National 
  Museum. 
  

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

  

  