﻿354 
  Scientific 
  Intelligence. 
  

  

  Puccinia 
  graminis. 
  It 
  had 
  been 
  suspected 
  that 
  Aec. 
  Magellani- 
  

   cum 
  was 
  a 
  species 
  which 
  was 
  perennial 
  oh 
  barberries, 
  although 
  by 
  

   some 
  mycologists 
  it 
  was 
  supposed 
  to 
  be 
  associated 
  with 
  a 
  Pucci- 
  

   nia 
  which 
  grows 
  on 
  Avena 
  elatior. 
  By 
  his 
  cultures 
  made 
  at 
  the 
  

   experiment 
  station 
  near 
  Stockholm, 
  Prof. 
  Eriksson 
  has 
  shown 
  by 
  

   inoculations 
  that, 
  although 
  Aec. 
  Magellanicum 
  is 
  really 
  a 
  stage 
  

   of 
  the 
  rust 
  of 
  Avena 
  elatior 
  to 
  which 
  he 
  gives 
  the 
  name 
  of 
  Pucci- 
  

   nia 
  Arrenatheri, 
  it 
  is 
  also 
  true 
  that 
  two 
  stages, 
  the 
  aecidium 
  and 
  

   the 
  teleutospores, 
  including 
  the 
  uredo, 
  may 
  be 
  propagated 
  peren- 
  

   nially 
  independently 
  of 
  one 
  another 
  on 
  Berberis 
  and 
  Avena 
  

   respectively. 
  In 
  other 
  words 
  the 
  two 
  stages 
  of 
  development 
  are 
  

   facultative 
  rather 
  than 
  essential. 
  When, 
  however, 
  the 
  aecidium- 
  

   stage 
  is 
  propagated 
  perennially 
  the 
  normal 
  period 
  of 
  incubation 
  

   is 
  much 
  lengthened, 
  a 
  period 
  of 
  from 
  three 
  to 
  four 
  years 
  being 
  

   required. 
  w. 
  g. 
  f. 
  

  

  3. 
  Phycotlieca 
  JBorealis- 
  American 
  a, 
  Cent, 
  vi 
  ; 
  by 
  Messrs. 
  Col- 
  

   lins, 
  Holden 
  and 
  Setchell 
  — 
  The 
  last 
  fascicle 
  of 
  this 
  important 
  

   series 
  contains 
  a 
  smaller 
  proportion 
  than 
  usual 
  of 
  fresh-water 
  spe- 
  

   cies, 
  the 
  marine 
  species 
  preponderating. 
  Among 
  the 
  rarities 
  we 
  

   may 
  mention 
  Phycocelis 
  maculans, 
  Entoderma 
  Wittrockii 
  and 
  

   Kallymenia 
  perforata. 
  w. 
  g. 
  f. 
  

  

  4. 
  Analytic 
  Keys 
  to 
  the 
  Genera 
  and 
  Species 
  of 
  North 
  Amer- 
  

   ican 
  Mosses 
  ; 
  by 
  Charles 
  Keid 
  Barnes 
  and 
  Fred 
  DeForest 
  

   Heald. 
  Bulletin 
  University 
  Wisconsin, 
  Science 
  Series 
  I 
  i-x, 
  

   157-368, 
  Madison, 
  Dec, 
  1896. 
  — 
  This 
  is 
  an 
  extension 
  and 
  revision 
  

   of 
  the 
  Artificial 
  Keys 
  to 
  the 
  Genera 
  and 
  Species 
  of 
  Mosses 
  

   recognized 
  in 
  Lesquereux 
  and 
  James'' 
  Manual 
  of 
  the 
  Mosses 
  of 
  

   North 
  America 
  issued 
  by 
  Prof. 
  Barnes 
  in 
  May, 
  1890, 
  a 
  work 
  

   which 
  proved 
  to 
  be 
  of 
  great 
  practical 
  service 
  to 
  students 
  of 
  our 
  

   mosses. 
  The 
  revised 
  edition 
  includes 
  an 
  Appendix 
  of 
  116 
  pages, 
  

   which 
  gives 
  the 
  descriptions 
  of 
  species 
  and 
  varieties 
  published 
  

   since 
  the 
  issue 
  of 
  Lesquereux 
  and 
  James's 
  Manual 
  in 
  1884 
  and 
  

   before 
  January 
  1896. 
  The 
  large 
  number 
  of 
  species 
  given 
  in 
  the 
  

   Appendix 
  1 
  603 
  in 
  all, 
  shows 
  the 
  great 
  activity 
  of 
  bryologists 
  in 
  

   recent 
  years, 
  and 
  the 
  incorporation 
  of 
  them 
  in 
  the 
  Analytic 
  Keys 
  

   will 
  greatly 
  facilitate 
  the 
  study 
  of 
  our 
  moss-flora, 
  for 
  only 
  a 
  small 
  

   number 
  of 
  specialists 
  have 
  access 
  to 
  the 
  original 
  descriptions. 
  

  

  w. 
  G. 
  F. 
  

  

  5. 
  Index 
  Desmidiacearum 
  citationibus 
  locupletisdmus 
  atque 
  

   JBibliographia 
  / 
  by 
  C. 
  F. 
  O. 
  Norpstedt. 
  Berlin, 
  pp. 
  310, 
  4to. 
  

   — 
  This 
  Index 
  well 
  deserves 
  the 
  name 
  " 
  locupletissirnus," 
  for 
  it 
  

   contains 
  not 
  far 
  from 
  1200 
  titles 
  in 
  the 
  Bibliographia. 
  It 
  may 
  

   practically 
  be 
  called 
  a 
  complete 
  index; 
  at 
  least, 
  it 
  would 
  be 
  diffi- 
  

   cult 
  to 
  imagine 
  one 
  more 
  complete. 
  The 
  species 
  are 
  arranged 
  

   alphabetically 
  by 
  specific 
  names 
  and 
  under 
  each 
  specific 
  name 
  the 
  

   generic 
  names, 
  when 
  there 
  are 
  more 
  than 
  one, 
  are 
  arranged 
  alpha- 
  

   betically 
  with 
  the 
  reference 
  to 
  the 
  literature 
  arranged 
  chronologi- 
  

   cally. 
  By 
  means 
  of 
  letters 
  it 
  is 
  indicated 
  whether 
  any 
  reference 
  

   cited 
  gives 
  a 
  description, 
  figure, 
  measurement, 
  etc. 
  The 
  amount 
  of 
  

   labor 
  required 
  to 
  prepare 
  the 
  Index 
  must 
  have 
  been 
  enormous 
  and 
  

  

  