﻿76 
  Scientific 
  Intelligence. 
  

  

  mineral 
  north 
  npite, 
  of 
  which 
  Foote* 
  had 
  given 
  a 
  preliminary- 
  

   description 
  and 
  states 
  that 
  they 
  are 
  probably 
  identical, 
  which 
  the 
  

   subsequent 
  quantitative 
  analysis 
  and 
  the 
  determination 
  of 
  the 
  

   physical 
  properties 
  of 
  the 
  mineralj 
  clearly 
  show. 
  j. 
  h. 
  p. 
  

  

  5. 
  The 
  genesis 
  of 
  the 
  Talc 
  deposits 
  of 
  St. 
  Lawrence 
  Co., 
  N. 
  Y. 
  — 
  

   A 
  paper 
  by 
  C. 
  H. 
  Smyth, 
  Jr., 
  in 
  vol. 
  xvii 
  of 
  the 
  School 
  of 
  Mines 
  

   Quarterly, 
  gives 
  the 
  results 
  of 
  the 
  author's 
  minute 
  study 
  of 
  the 
  

   talc 
  deposits 
  of 
  St. 
  Lawrence 
  Co., 
  in 
  northern 
  New 
  York. 
  He 
  

   concludes 
  that 
  the 
  talc 
  is 
  doubtless 
  pseudomorphous, 
  and 
  that 
  the 
  

   original 
  minerals 
  were 
  tremolite 
  and 
  eustatite, 
  to 
  which 
  it 
  owes 
  

   its 
  common 
  fibrous 
  character. 
  He 
  recognizes 
  three 
  distinct 
  stages 
  

   in 
  the 
  origin 
  of 
  the 
  deposits: 
  first, 
  the 
  formation 
  of 
  an 
  impure 
  

   siliceous 
  and 
  magnesian 
  limestone; 
  second, 
  the 
  conversion 
  ot 
  this 
  

   into 
  enstatite 
  and 
  tremolite 
  schist 
  by 
  metamorphosis; 
  third, 
  the 
  

   change 
  of 
  this 
  schist 
  into 
  talc 
  by 
  the 
  action 
  of 
  water 
  charged 
  

   with 
  carbon 
  dioxide. 
  . 
  

  

  6. 
  A 
  Handbook 
  of 
  Rocks 
  for 
  use 
  without 
  the 
  Microscope 
  / 
  by 
  

   Jas. 
  F. 
  Kemp. 
  8°, 
  176 
  pp. 
  (Pub. 
  by 
  author, 
  1896.)— 
  This 
  little 
  

   handbook 
  will 
  undoubtedly 
  be 
  found 
  of 
  great 
  service 
  to 
  field 
  

   geologists, 
  engineers, 
  chemists, 
  and 
  in 
  short 
  all 
  those 
  who 
  desire 
  

   more 
  definite 
  and 
  special 
  knowledge 
  about 
  rocks 
  than 
  is 
  found 
  in 
  

   geological 
  text-books, 
  and 
  yet 
  who 
  do 
  not 
  desire 
  to 
  approach 
  the 
  

   subject 
  from 
  the 
  difficult 
  side 
  of 
  microscopical 
  petrography. 
  One 
  

   of 
  the 
  chief 
  merits 
  of 
  the 
  work 
  is 
  that 
  it 
  does 
  not 
  attempt 
  to 
  tell 
  

   too 
  much 
  by 
  exchanging 
  clearness 
  for 
  brevity. 
  It 
  is 
  evident 
  that 
  

   only 
  the 
  broadest 
  distinctions 
  and 
  simplest 
  of 
  classi6cations 
  can 
  

   be 
  made 
  without 
  the 
  use 
  of 
  the 
  microscope, 
  and 
  that 
  complicated 
  

   methods 
  for 
  determining 
  all 
  rocks 
  by 
  megascopic 
  properties 
  must 
  

   necessarily 
  be 
  unsatisfactory. 
  Wisely 
  recognizing 
  this, 
  the 
  

   author 
  has 
  confined 
  himself 
  to 
  telling 
  such 
  things 
  about 
  rocks 
  as 
  

   it 
  is 
  possible 
  to 
  learn 
  without 
  the 
  microscope. 
  The 
  tables 
  of 
  

   analyses 
  and 
  discussions 
  of 
  the 
  chemical 
  composition 
  are 
  an 
  ex- 
  

   cellent 
  feature. 
  The 
  value 
  is 
  also 
  greatly 
  enhanced 
  by 
  a 
  very 
  full 
  

   glossary 
  in 
  the 
  end. 
  l. 
  v. 
  p. 
  

  

  III. 
  Botany 
  and 
  Zoology. 
  

  

  1. 
  An 
  Illustrated 
  Flora 
  of 
  the 
  Northern 
  United 
  States, 
  Canada, 
  

   and 
  the 
  British 
  Possessions 
  from 
  Newfoundland 
  to 
  the 
  Parallel 
  of 
  

   the 
  Southern 
  Boundary 
  of 
  Virginia, 
  and 
  from 
  the 
  Atlantic 
  Ocean 
  

   westward 
  to 
  the 
  102d 
  meridian 
  • 
  by 
  Nathaniel 
  Lord 
  Britton, 
  

   Ph.D., 
  and 
  Hon. 
  Addison 
  Brown. 
  In 
  three 
  volumes. 
  Yol. 
  l,Oph- 
  

   loglossaceage 
  to 
  Alzoaceae. 
  New 
  York, 
  1896 
  (Charles 
  Scribner's 
  

   Sons). 
  — 
  Believing 
  sincerely 
  that 
  whatever 
  stimulates 
  the 
  study 
  of 
  

   Natural 
  History 
  is 
  a 
  substantial 
  gain, 
  we 
  welcome 
  this 
  treatise. 
  

   Its 
  typography 
  and 
  profuseness 
  of 
  illustration 
  cannot 
  fail 
  to 
  

   attract 
  many 
  readers 
  who 
  will 
  use 
  it 
  as 
  an 
  agreeable 
  introduc- 
  

   tion 
  to 
  the 
  pursuit 
  of 
  botany. 
  To 
  the 
  system 
  of 
  nomenclature 
  

   which 
  has 
  been 
  adopted, 
  we 
  cannot, 
  at 
  this 
  stage 
  of 
  what 
  promises 
  

  

  * 
  This 
  Journal, 
  vol. 
  1, 
  p. 
  480, 
  Dec. 
  1895, 
  and 
  vol. 
  ii, 
  p. 
  124. 
  Aug. 
  1896. 
  

  

  