﻿CONTENTS. 
  

  

  Numrjer 
  250. 
  

  

  Page 
  

  

  Art. 
  XXVII. 
  — 
  Some 
  of 
  the 
  Possibilities 
  of 
  Economic 
  Bot- 
  

   any; 
  by 
  G. 
  L. 
  Goodale 
  271 
  

  

  XXVIII. 
  — 
  Vitality 
  of 
  some 
  Annual 
  Plants 
  ; 
  by 
  T. 
  Holm. 
  

  

  With 
  Plate 
  X 
  304 
  

  

  XXIX. 
  — 
  Method 
  for 
  the 
  Separation 
  of 
  Antimony 
  from 
  

   Arsenic 
  by 
  the 
  Simultaneous 
  Action 
  of 
  Hydrochloric 
  and 
  

   Hydriodic 
  Acids 
  ; 
  by 
  F. 
  A. 
  Gooch 
  and 
  E. 
  W. 
  Danner 
  308 
  

  

  XXX.- 
  — 
  Notes 
  on 
  Allotropic 
  Silver; 
  by 
  M. 
  C. 
  Lea 
  312 
  

  

  XXXI. 
  — 
  Structural 
  Geology 
  of 
  Steep 
  Rock 
  Lake, 
  Ontario 
  ; 
  

  

  by 
  H. 
  L. 
  Smyth. 
  With 
  Plate 
  XI 
  317 
  

  

  XXXII. 
  — 
  So-called 
  Amber 
  of 
  Cedar 
  Lake, 
  North 
  Saskatch- 
  

   ewan, 
  Canada; 
  by 
  B. 
  J. 
  Harrington, 
  McGill 
  College, 
  

   Montreal 
  _ 
  _ 
  332 
  

  

  XXXIII. 
  — 
  Geological 
  Horizons 
  as 
  determined 
  by 
  Vertebrate 
  

  

  Fossils 
  ; 
  by 
  O. 
  C. 
  Marsh. 
  With 
  Plate 
  XII 
  336 
  

  

  SCIENTIFIC 
  INTELLIGENCE. 
  

  

  Chemistry 
  and 
  Physics 
  — 
  Absorption 
  Spectrum 
  of 
  Liquid 
  Oxygen, 
  Olszewski, 
  338. 
  

   — 
  Production 
  of 
  Ozone 
  in 
  Rapid 
  Combustion, 
  Ilosvay, 
  339. 
  — 
  Sulphuryl 
  Per- 
  

   oxide, 
  Traube, 
  340. 
  — 
  Dictionary 
  of 
  Applied 
  Chemistry, 
  Thorpe 
  : 
  Measurement 
  

   of 
  time 
  of 
  Potation, 
  Prytz: 
  Method 
  of 
  determining 
  Specific 
  Heat 
  by 
  means 
  of 
  

   the 
  Electrical 
  Current, 
  Pfaundler, 
  341. 
  — 
  Optical 
  relation 
  of 
  Organic 
  Dyes, 
  

   Vogel: 
  Maxim's 
  Flying 
  Machine: 
  Small 
  Electrometers, 
  Boys: 
  Influence 
  of 
  

   brightness 
  upon 
  phenomena 
  of 
  interference 
  of 
  light, 
  Ebert, 
  342. 
  — 
  Thought 
  

   transference, 
  Lodge, 
  343. 
  

  

  Geology 
  — 
  Fifth 
  Triennial 
  Meeting 
  of 
  the 
  International 
  Congress 
  of 
  G-eologists, 
  

   343. 
  — 
  Geological 
  Society 
  of 
  America: 
  United 
  States 
  Association 
  of 
  Govern- 
  

   ment 
  Geologists, 
  344. 
  — 
  Fauna 
  of 
  the 
  Lower 
  Cambrian 
  or 
  Olenellus 
  Zone, 
  C. 
  D. 
  

   Walcott, 
  345. 
  — 
  Relation 
  of 
  secular 
  Rock-disintegration 
  to 
  certain 
  transitional 
  

   crystalline 
  schists, 
  R. 
  Pumpelly, 
  346. 
  — 
  Greylock 
  Synclinorium, 
  T. 
  N. 
  Dale: 
  

   Report 
  on 
  the 
  Arkansas 
  Geological 
  Survey 
  for 
  1888, 
  J. 
  C. 
  Branner: 
  Tungsten 
  

   minerals 
  in 
  Canada, 
  W. 
  F. 
  Ferrier, 
  347. 
  

  

  Botany 
  — 
  Some 
  Museums 
  and 
  Botanical 
  Gardens 
  in 
  the 
  Equatorial 
  Belt 
  and 
  in 
  the 
  

   South 
  Seas, 
  347. 
  

  

  Miscellaneous 
  Scientific 
  Intelligence 
  — 
  American 
  Association 
  for 
  the 
  Advancement 
  of 
  

   Science, 
  353. 
  — 
  British 
  Association, 
  358. 
  

  

  Obituary 
  — 
  William 
  Ferrel, 
  358. 
  

  

  