﻿^^9^- 
  J 
  BOTANICAL 
  GAZETTE. 
  1 
  87 
  

  

  Dr. 
  a. 
  N. 
  Bkrlese, 
  assistant 
  in 
  the 
  preparation 
  of 
  Saccardo's 
  Sylloge 
  

   i?ungorum, 
  proposes 
  to 
  issue 
  a 
  series 
  of 
  colored 
  illustrations 
  to 
  accom- 
  

   pany 
  that 
  work. 
  Four 
  parts 
  will 
  be 
  published 
  annually 
  at 
  20 
  francs 
  each. 
  

   It 
  will 
  open 
  with 
  the 
  Pyrenomvcetes. 
  Subscriptions 
  may 
  be 
  sent 
  to 
  the 
  

   author, 
  whose 
  address 
  is 
  Lycee 
  Royal 
  a 
  Ascoli-riceno, 
  Italy. 
  

  

  . 
  At 
  a 
  recent 
  meeting 
  of 
  the 
  botanical 
  society 
  of 
  Munich, 
  Dr. 
  R. 
  Hart- 
  

   ig 
  spoke 
  of 
  the 
  high 
  absorptive 
  power 
  of 
  snow 
  in 
  respect 
  to 
  sulphuric 
  and 
  

   sulphurous 
  acids, 
  and 
  called 
  attention 
  to 
  the 
  injury 
  done 
  to 
  the 
  conifers 
  

   in 
  newly 
  built 
  portions 
  of 
  the 
  city 
  by 
  the 
  smoke. 
  In 
  16 
  days' 
  exposure 
  

   ttie 
  amount 
  of 
  SO^ 
  in 
  the 
  snow. 
  increased 
  from 
  7 
  mg. 
  per 
  kilo 
  to 
  91.5 
  mg., 
  

   while 
  in 
  nearly 
  the 
  same 
  time, 
  snow 
  7.5 
  km. 
  west 
  of 
  the 
  city 
  absorbed 
  less 
  

   than 
  b 
  mg. 
  per 
  kilo. 
  Conifers 
  which 
  up 
  to 
  three 
  years 
  ago 
  had 
  been 
  vig- 
  

   orous 
  have 
  been 
  destroyed, 
  he 
  believes, 
  by 
  the 
  coal 
  smoke 
  coming 
  from 
  

   the 
  residences. 
  

  

  Thk 
  SECTiox 
  of 
  Vegetable 
  Pathology 
  of 
  the 
  Department 
  of 
  Agri- 
  

   culture, 
  by 
  a 
  recent 
  act 
  of 
  Congress, 
  has 
  been 
  made 
  a 
  Division, 
  so 
  that 
  

  

  ^"^^^/^ 
  m,^^ 
  ^^ 
  ^^^^^1 
  footing 
  with 
  the 
  other 
  branches 
  of 
  the 
  Depart- 
  

   ment. 
  The 
  work 
  is 
  now 
  thoroughly 
  organized 
  with 
  a 
  good 
  corps 
  of 
  

   assistants 
  in 
  the 
  laboratory 
  and 
  field. 
  One 
  of 
  Mr. 
  Galloway^s 
  assistants 
  

   8 
  now 
  m 
  Europe 
  investigating 
  a 
  grape 
  vine 
  disease 
  there, 
  in 
  the 
  hopes 
  

   Jf 
  gettmg 
  some 
  light 
  on 
  the 
  Californian 
  grape 
  trouble. 
  This 
  Californian 
  

   aisease 
  is 
  thought 
  to 
  be 
  identical 
  with 
  one 
  now 
  prevailing 
  in 
  Italy, 
  

   ^pain,and 
  Northern 
  Africa, 
  and 
  the 
  assistant, 
  Mr. 
  Pierce, 
  will 
  visit 
  these 
  

   t>ountries 
  for 
  the 
  purpose 
  of 
  definitely 
  settling 
  the 
  matter. 
  

  

  hvb 
  H^' 
  A^^^^^ 
  Fryer, 
  in 
  Journal 
  of 
  Botany 
  (June), 
  describes 
  supposed 
  

   joridity 
  in 
  Potamogeton. 
  His 
  conclusions 
  are 
  more 
  far 
  reaching 
  than 
  

   for 
  ^^ 
  ?^l^ 
  ^^ 
  hybridity, 
  and 
  are 
  as 
  follows: 
  (1) 
  That 
  nearly 
  aUied 
  

   orma 
  of 
  Potamogeton 
  certainly 
  cross 
  ; 
  (2) 
  that 
  these 
  cross-bred 
  plants 
  

   artifi^^^n*™^^ 
  fertile; 
  (3j 
  that 
  their 
  offspring 
  varies 
  from 
  seed 
  just 
  as 
  

   f 
  "^^^^^^'y 
  PJ'oduced 
  hybrids 
  do; 
  (4) 
  that 
  Potamogetons 
  may 
  progress 
  

   rom 
  absolute 
  sterihty 
  to 
  more 
  or 
  less 
  complete 
  fertility, 
  under 
  the 
  influ- 
  

   nce 
  Of 
  extended 
  time 
  and 
  favorable 
  conditions. 
  In 
  conclusion, 
  the 
  

   "rt^a 
  ^ 
  ^^P 
  that, 
  if 
  he 
  is 
  correct, 
  we 
  may 
  safely 
  assume 
  that 
  crossing 
  of 
  

   species 
  has 
  been, 
  and 
  still 
  is, 
  one 
  of 
  the 
  methods 
  by 
  which 
  other 
  spe- 
  

   cies 
  are 
  fashioned, 
  

  

  in 
  ."^^^^^'^fEMENTS 
  for 
  the 
  Indianapolis 
  meeting 
  are 
  being 
  completed 
  

   Assr 
  ^'^ 
  *■ 
  ^^^^ 
  insure 
  a 
  very 
  enjoyable 
  meeting 
  of 
  the 
  American 
  

   and 
  tv.'^ 
  °" 
  ^^^ 
  Denison 
  House 
  has 
  been 
  chosen 
  as 
  hotel 
  headquarters 
  

   u 
  me 
  new 
  and 
  magnificent 
  State 
  House 
  will 
  admit 
  all 
  the 
  sectional 
  

   selT'^^^^^der 
  one 
  roof. 
  On 
  Wednesday, 
  August 
  20th, 
  the 
  first 
  general 
  

   °^>on 
  of 
  the 
  meeting 
  will 
  beghi 
  at 
  10 
  a. 
  ji., 
  in 
  the 
  House 
  of 
  Repre- 
  

   KU8t 
  o7®-^" 
  T^^ 
  Botanical 
  Club 
  will 
  hold 
  a 
  meeting 
  on 
  Thursday, 
  Au- 
  

   ^J. 
  f'^\"ie 
  rooms 
  of 
  Section 
  F, 
  and 
  special 
  arrangements 
  are 
  bemg 
  

   botfln- 
  f'' 
  -^ 
  entertainment. 
  It 
  is 
  expected 
  that 
  a 
  larger 
  number 
  of 
  

   tial 
  in 
  S 
  ^® 
  '^^ 
  attendance 
  than 
  ever 
  before. 
  While 
  nothing 
  unus- 
  

   ereat 
  p 
  "^^^ 
  ^^ 
  collecting 
  can 
  be 
  offered, 
  interesting 
  ground 
  m 
  this 
  

   pectPd 
  b''^^ 
  ^^^«t 
  will 
  be 
  visited, 
  and 
  an 
  enjoyable 
  time 
  may 
  be 
  ex- 
  

   BhoMlH 
  ■'^'^'^^iiists 
  should 
  not 
  only 
  be 
  present 
  in 
  large 
  numbers, 
  but 
  

   meetin 
  ^^^^ 
  prepared 
  with 
  papers, 
  either 
  for 
  Section 
  F, 
  or 
  for 
  the 
  C 
  ub 
  

   ehonl^ 
  .!' 
  ^^ 
  ^o'" 
  both. 
  Communications 
  with 
  reference 
  to 
  the 
  Club 
  

   New 
  V 
  1 
  ^^"' 
  *o 
  ^he 
  President, 
  Dr. 
  N. 
  L. 
  Britton, 
  Columbia 
  College, 
  

   of 
  Wia^ 
  '•'''^ 
  *° 
  *b^ 
  Secretary, 
  Professor 
  Charles 
  R. 
  Barnes, 
  University 
  

   pleaJ 
  .^1^' 
  ^^adison, 
  Wis. 
  All 
  botanists 
  intending 
  to 
  be 
  present 
  will 
  

  

  notify 
  Professor 
  John 
  M. 
  Coulter, 
  Crawfordsville, 
  Indiana. 
  

  

  