﻿78 
  Scientific 
  Intelligence. 
  

  

  inorganic 
  things, 
  up 
  to 
  the 
  complex 
  factors 
  which 
  are 
  concerned 
  

   in 
  reproduction 
  of 
  animals 
  and 
  plants. 
  The 
  technique 
  in 
  both 
  

   these 
  works 
  is 
  precise 
  and 
  special, 
  with 
  explicit 
  directions 
  for 
  pro- 
  

   cedure 
  which 
  can 
  hardly 
  be 
  misunderstood. 
  The 
  feature 
  which 
  

   strikes 
  one 
  most 
  forcibly 
  in 
  looking 
  through 
  these 
  excellent 
  

   handbooks. 
  is 
  the 
  entire 
  absence, 
  in 
  the 
  choice 
  of 
  illustrations, 
  of 
  

   any 
  barrier 
  between 
  the 
  two 
  kingdoms 
  of 
  animals 
  and 
  plants. 
  

   The 
  recent 
  interesting 
  artificial 
  production 
  of 
  extra-nuclear 
  

   karyokinetic 
  figures 
  by 
  the 
  employment 
  of 
  certain 
  reagents 
  such 
  

   as 
  albumose 
  and 
  osmic 
  acid, 
  and 
  the 
  singular 
  imitations 
  of 
  a 
  few 
  

   of 
  the 
  characteristics 
  of 
  protoplasm, 
  are 
  here 
  presented 
  in 
  almost 
  

   their 
  latest 
  form, 
  and 
  excite 
  keen 
  curiosity 
  as 
  to 
  the 
  possibilities 
  

   in 
  this 
  new 
  department 
  of 
  microscopic 
  research. 
  The 
  handbooks 
  

   are 
  well 
  arranged 
  and 
  are 
  convenient 
  for 
  reference 
  : 
  the 
  indexes 
  

   being 
  full 
  and 
  useful. 
  g. 
  l. 
  g. 
  

  

  3. 
  Untersuchungen 
  ueber 
  die 
  Vermehrung 
  der 
  JLaubmoose 
  durch 
  

   Brutorgane 
  und 
  Stechlinge 
  ; 
  by 
  Dr. 
  Cael 
  Coeeens. 
  1899, 
  Jena. 
  

   Gustav 
  Fischer; 
  472 
  pp., 
  8°, 
  187 
  figures. 
  — 
  In 
  this 
  elaborate 
  

   monograph, 
  dedicated 
  to 
  the 
  memory 
  of 
  Naegeli 
  by 
  his 
  last 
  pupil, 
  

   the 
  author 
  gives 
  the 
  results 
  of 
  his 
  histological 
  studies 
  on 
  the 
  non- 
  

   sexual 
  methods 
  of 
  reproduction 
  in 
  mosses. 
  The 
  number 
  of 
  

   species 
  studied 
  was 
  so 
  large 
  that 
  the 
  work 
  may 
  be 
  regarded 
  as 
  an 
  

   encyclopaedia 
  of 
  the 
  subject. 
  The 
  author, 
  contrary 
  to 
  the 
  gen- 
  

   erally 
  received 
  opinion 
  that 
  any 
  cell 
  of 
  a 
  Brutorgan 
  is 
  capable 
  of 
  

   developing 
  into 
  a 
  vegetative 
  shoot, 
  believes 
  that 
  this 
  capacity 
  is 
  

   limited 
  to 
  certain 
  cells 
  which 
  he 
  calls 
  Initial-cells. 
  The 
  separa- 
  

   tion 
  of 
  a 
  Brutorgan 
  is 
  accomplished 
  in 
  two 
  different 
  ways. 
  In 
  

   the 
  first, 
  or 
  schizolytic, 
  method 
  the 
  rupture 
  is 
  along 
  the 
  middle 
  

   lamella; 
  in 
  the 
  second, 
  or 
  rhexolytic 
  method, 
  the 
  cells 
  themselves 
  

   are 
  ruptured 
  and, 
  in 
  the 
  more 
  complicated 
  Brutorgane, 
  certain 
  

   definitely 
  arranged 
  cells 
  are 
  destined 
  to 
  be 
  ruptured. 
  The 
  author's 
  

   observations 
  confirm 
  the 
  view 
  that 
  Brutorgane, 
  representing 
  non- 
  

   sexual 
  growths, 
  are 
  correlated 
  with 
  the 
  sexual, 
  or 
  capsular, 
  

   growths, 
  so 
  that 
  where 
  the 
  former 
  are 
  abundant 
  the 
  latter 
  are 
  

   scantily 
  developed 
  or 
  wanting, 
  but 
  he 
  expresses 
  the 
  opinion 
  that 
  

   the 
  capacity 
  for 
  producing 
  Brutorgane 
  is 
  inherent 
  and 
  is 
  inde- 
  

   pendent 
  of 
  any 
  other 
  property 
  of 
  the 
  species. 
  w. 
  g. 
  f. 
  

  

  4. 
  Analecta 
  Algologica, 
  continuatio 
  V 
  / 
  by 
  Professor 
  J. 
  G. 
  

   Agaedh. 
  Acta. 
  Reg. 
  Soc. 
  Physiogr. 
  Lund, 
  x, 
  pp. 
  160, 
  4°, 
  pi. 
  

   i-iii. 
  — 
  This 
  continuation 
  of 
  the 
  Analecta, 
  with, 
  the 
  exception 
  of 
  a 
  

   short 
  chapter 
  on 
  the 
  new 
  Australian 
  genus 
  of 
  Fucacese, 
  Scceno- 
  

   phora, 
  treats 
  entirely 
  of 
  Floridese. 
  There 
  is 
  a 
  revision 
  of 
  the 
  

   subgenera 
  of 
  the 
  genus 
  Gigartina, 
  with 
  notes 
  on 
  certain 
  species 
  

   including 
  eleven 
  species 
  from 
  our 
  Pacific 
  Coast, 
  and 
  revisions 
  of 
  

   species 
  formerly 
  placed 
  in 
  Halymenia 
  and 
  Chrysymenia, 
  from 
  

   which 
  several 
  new 
  genera 
  are 
  formed. 
  The 
  new 
  genus 
  Collinsia 
  

   with 
  a 
  single 
  species 
  from 
  California 
  is 
  related 
  to 
  Grateloupia. 
  

   There 
  is, 
  however, 
  already 
  a 
  genus 
  of 
  phsenogams 
  called 
  Collinsia. 
  

   Among 
  other 
  new 
  American 
  species 
  are 
  Calosiphona 
  caribcea, 
  

   Dudresnaya 
  canescens, 
  Helminthopsis 
  verticillifera 
  and 
  JVaccaria 
  

  

  