﻿Geology 
  and 
  Mineralogy. 
  333 
  

  

  models 
  is 
  supplemented 
  by 
  numerous 
  practical 
  exercises 
  selected 
  

   from 
  typical 
  architectural 
  forms 
  than 
  when 
  the 
  subject 
  is 
  pre- 
  

   sented 
  in 
  a 
  stereotyped 
  Euclidean 
  manner. 
  Accordingly, 
  

   although 
  the 
  volume 
  is 
  not 
  intended 
  to 
  be 
  an 
  architectural 
  text- 
  

   book, 
  it 
  contains 
  an 
  undercurrent 
  of 
  suggestion 
  of 
  the 
  historical 
  

   development 
  of 
  architecture 
  which 
  should 
  add 
  interest 
  to 
  the 
  

   theory 
  of 
  correct 
  drawing, 
  appeal 
  to 
  the 
  esthetic 
  sense, 
  and 
  act 
  

   as 
  an 
  incentive 
  to 
  original 
  work. 
  

  

  The 
  text 
  is 
  divided 
  into 
  two 
  parts, 
  the 
  first 
  of 
  which 
  deals 
  

   primarily 
  with 
  geometrical 
  constructions 
  (4 
  chapters) 
  and 
  the 
  

   second 
  (4 
  chapters) 
  pertains 
  mainly 
  to 
  drawing 
  in 
  perspective. 
  

   The 
  following 
  salient 
  features 
  also 
  deserve 
  notice. 
  No 
  measur- 
  

   ing 
  points 
  are 
  employed. 
  " 
  The 
  authors 
  believe 
  that 
  the 
  perspec- 
  

   tive 
  treatment 
  of 
  the 
  circle 
  is 
  quite 
  new, 
  and 
  they 
  have 
  found 
  

   that 
  pupils 
  can 
  use 
  the 
  method 
  with 
  ease 
  and 
  advantage." 
  Com- 
  

   parisons 
  of 
  representations 
  on 
  changing 
  picture 
  planes 
  are 
  given, 
  

   and 
  their 
  relative 
  advantages 
  are 
  discussed. 
  Frequent 
  oppor- 
  

   tunities 
  are 
  afforded 
  for 
  sketching 
  from 
  memory, 
  and 
  free 
  use 
  of 
  

   tracing-paper 
  in 
  observation 
  work 
  and 
  of 
  clay 
  in 
  modelling 
  is 
  in- 
  

   dicated. 
  The 
  line 
  diagrams 
  and 
  other 
  illustrations 
  are 
  excellent, 
  

   the 
  pages 
  make 
  a 
  pleasing 
  impression 
  on 
  the 
  eye, 
  and 
  the 
  subject 
  

   is 
  presented 
  in 
  a 
  very 
  attractive 
  manner. 
  h. 
  s. 
  u. 
  

  

  10. 
  The 
  Teaching 
  of 
  Arithmetic 
  / 
  by 
  Paul 
  Kla.pp.er. 
  Pp. 
  vii, 
  

   387 
  ; 
  51 
  figures. 
  New 
  York, 
  1916 
  (D. 
  Appleton 
  and 
  Co.).— 
  This 
  

   volume 
  is 
  an 
  outgrowth 
  of 
  a 
  course 
  of 
  lectures 
  given 
  to 
  teachers 
  

   in 
  the 
  elementary 
  schools. 
  The 
  book 
  is 
  not 
  a 
  text 
  on 
  the 
  subject 
  

   of 
  arithmetic, 
  but 
  it 
  is 
  a 
  manual 
  of 
  method 
  of 
  teaching 
  arithmetic. 
  

   The 
  early 
  chapters 
  are 
  devoted 
  to 
  a 
  critical 
  study 
  of 
  the 
  values 
  

   of 
  arithmetic, 
  of 
  the 
  principles 
  governing 
  the 
  organization 
  of 
  the 
  

   course 
  of 
  study, 
  and 
  of 
  the 
  pyschology 
  underlying 
  sound 
  methods 
  

   in 
  arithmetic. 
  The 
  later 
  chapters 
  set 
  forth 
  methods 
  rather 
  than 
  

   the 
  method 
  of 
  teaching 
  each 
  of 
  the 
  important 
  branches 
  of 
  

   arithmetic. 
  The 
  index 
  is 
  preceded 
  by 
  two 
  appendixes, 
  of 
  

   which 
  the 
  first 
  is 
  a 
  classified 
  list 
  of 
  the 
  titles 
  of 
  reference 
  books 
  

   on 
  the 
  subject, 
  and 
  the 
  second 
  contains 
  standard 
  tests 
  for 
  classes 
  

   of 
  different 
  grades. 
  Although 
  the 
  text 
  refers 
  primarily 
  to 
  

   arithmetic 
  it 
  merits 
  the 
  attention 
  of 
  all 
  teachers 
  of 
  elementary 
  

   subjects 
  because 
  the 
  underlying 
  principles 
  are 
  of 
  general 
  applica- 
  

   bility 
  and 
  since 
  the 
  material 
  is 
  presented 
  in 
  a 
  very 
  clear 
  and 
  

   thorough 
  manner. 
  h. 
  s. 
  u. 
  

  

  II. 
  Geology 
  and 
  Mineralogy. 
  

  

  1. 
  American 
  Fossil 
  Cycads 
  y 
  Volume 
  II, 
  Taxoiiomy 
  y 
  by 
  G. 
  

   R. 
  Wieland. 
  Issued 
  by 
  the 
  Carnegie 
  Institution 
  of 
  Washington 
  

   as 
  Publication 
  34, 
  Volume 
  II, 
  on 
  July 
  28, 
  1916. 
  — 
  In 
  this, 
  Pro- 
  

   fessor 
  Wieland's 
  second, 
  volume 
  on 
  American 
  Fossil 
  Cycads, 
  are 
  

   embodied 
  the 
  results 
  of 
  his 
  labors 
  for 
  the 
  last 
  ten 
  years, 
  reports 
  

   of 
  which 
  have 
  appeared 
  from 
  time 
  to 
  time 
  chiefly 
  in 
  this 
  Journal. 
  

  

  