﻿78 
  BOTANICAL 
  GAZETTE. 
  [March, 
  

  

  Peter 
  Hexdersox, 
  widely 
  known 
  as 
  a 
  seedsman, 
  florist 
  and 
  gar- 
  

   dener, 
  and 
  the 
  author 
  of 
  two 
  cr 
  three 
  widely-read 
  books, 
  died 
  at 
  his 
  home 
  

   in 
  Jersey 
  City, 
  January 
  17. 
  He 
  had 
  heen 
  in 
  excellent 
  health 
  nptoa 
  

   short 
  time 
  before, 
  when 
  he 
  was 
  taken 
  with 
  the 
  "grip." 
  This 
  attack 
  did 
  

   not 
  at 
  first 
  appear 
  to 
  be 
  serious, 
  and 
  he 
  was 
  shortly 
  able 
  to 
  be 
  out. 
  But 
  a 
  

   chill 
  followed, 
  causing 
  an 
  attack 
  of 
  pneumonia 
  which 
  proved 
  quickly 
  fa- 
  

   tal. 
  Mr. 
  Henderson 
  was 
  born 
  in 
  Pathhead, 
  a 
  small 
  village 
  near 
  Edin- 
  

   burgh, 
  Scotland, 
  in 
  1823. 
  He 
  left 
  school 
  at 
  the 
  age 
  of 
  fifteen, 
  with 
  a 
  fair 
  

   English 
  education, 
  and 
  became 
  apprenticed 
  to 
  a 
  gardener. 
  He 
  became 
  

   greatly 
  interested 
  in 
  botany, 
  and 
  before 
  he 
  was 
  eighteen 
  years 
  old 
  had 
  

   twice 
  competed 
  successfully 
  for 
  the 
  medals 
  given 
  by 
  the 
  Botanical 
  So- 
  

   ciety 
  of 
  Edinburgh 
  for 
  the 
  best 
  herbarium 
  of 
  native 
  and 
  exotic 
  plants. 
  

   When 
  his 
  four 
  years' 
  apprenticeship 
  was 
  con^pleted 
  he 
  came 
  to 
  New 
  York. 
  

   In 
  1847 
  he 
  began 
  business 
  as 
  a 
  market 
  gardener 
  in 
  Jersey 
  City, 
  and 
  

   for 
  twenty 
  years 
  or 
  more 
  that 
  was 
  his 
  principal 
  business. 
  But 
  his 
  taste 
  

   for 
  ornamental 
  gardening 
  grew 
  and 
  he 
  became 
  a 
  florist, 
  and 
  later 
  still 
  a 
  

   seedsman. 
  The 
  seed 
  business 
  proved 
  most 
  important 
  of 
  all. 
  At 
  the 
  time 
  

   of 
  his 
  death 
  he 
  was 
  accounted 
  one 
  of 
  the 
  most 
  successful 
  and 
  widely- 
  

   known 
  seedsmen 
  in 
  the 
  country. 
  The 
  first 
  of 
  his 
  books, 
  entitled 
  "Gar- 
  

   denmg 
  for 
  Profit," 
  was 
  brought 
  out 
  when 
  he 
  was 
  in 
  the 
  marketgardenin 
  

   busmess 
  ; 
  but 
  it 
  has 
  been 
  revised 
  and 
  later 
  editions 
  published, 
  and 
  prove 
  

   a 
  naost 
  successful 
  work. 
  Over 
  100,000 
  copies 
  have 
  been 
  sold. 
  Later 
  he 
  

   published 
  « 
  Gardening 
  for 
  Pleasure," 
  which 
  also 
  sold 
  well, 
  and 
  still 
  lat«r, 
  

   his 
  Handbook 
  of 
  Plants." 
  The 
  last-mentioned 
  book 
  was 
  revised 
  during 
  

   the 
  lasi 
  year, 
  and 
  is 
  still 
  in 
  the 
  hands 
  of 
  the 
  binder.— 
  i^. 
  Y. 
  Times 
  {emend.). 
  

  

  Strasbtjrger's 
  present 
  statement 
  of 
  the 
  growth 
  of 
  the 
  cell- 
  wall 
  as 
  

   set 
  forth 
  m 
  his 
  last 
  paper 
  on 
  the 
  subject^ 
  is 
  as 
  follows 
  : 
  The 
  cell 
  mem- 
  

   brane 
  arising 
  upon 
  the 
  division 
  of 
  a 
  cell 
  is 
  formed 
  by 
  the 
  direct 
  alter- 
  

   ation 
  of 
  the 
  cell 
  plate, 
  which 
  is 
  of 
  cytoplasmic 
  nature. 
  The 
  same 
  is 
  

   true 
  of 
  new 
  membrane 
  or 
  new 
  layers 
  formed 
  without 
  division. 
  Mem- 
  

   branes 
  or 
  layers 
  arising 
  thus 
  either 
  do 
  or 
  do 
  not 
  grow 
  according 
  as 
  sub- 
  

   stances 
  froni 
  the 
  cell 
  do 
  or 
  do 
  not 
  penetrate 
  them. 
  The 
  most 
  common 
  

   intrusive 
  substance 
  is 
  the 
  living 
  cell 
  plasma 
  (hyaloplasm) 
  which 
  is 
  altered 
  

   m 
  the 
  membrane 
  into 
  its 
  own 
  substance. 
  In 
  certain 
  cases 
  the 
  growth 
  of 
  

   the 
  membrane 
  through 
  direct 
  penetration 
  of 
  substance 
  like 
  the 
  existing 
  

   membrane 
  IS 
  not 
  excluded, 
  but 
  it 
  is 
  not 
  proved. 
  The 
  intrusion 
  of 
  liv- 
  

   ing 
  hyaloplasm 
  takes 
  place 
  especially 
  in 
  those 
  membranes 
  which 
  are 
  

  

  Sin"? 
  w^.''"r.''®**. 
  °'' 
  suberised. 
  It 
  is 
  less 
  certain 
  that 
  it 
  occurs 
  in 
  

   lignification, 
  but 
  not 
  improbable. 
  The 
  common 
  stratification 
  of 
  mem- 
  

  

  Wr! 
  Ml 
  fu 
  "^ 
  ^PPT^'T' 
  *• 
  '•' 
  ^"^ 
  *^® 
  continued 
  successive 
  formation 
  of 
  

   K! 
  foTv, 
  p"?¥^a^ 
  cytoplasm. 
  The 
  surface 
  growth 
  in 
  some 
  cases 
  

  

  -re«.?vP 
  rl^^Lv'' 
  /""^ 
  ^^ 
  '^"'^^"^^ 
  °^ 
  *^e 
  o'der 
  Tamelte 
  and 
  the 
  pro- 
  

   gressive 
  deposition 
  of 
  new 
  ones. 
  In 
  other 
  cases 
  it 
  is 
  in 
  all 
  probability 
  

  

  si?b8WpT« 
  r 
  T 
  ?^ 
  "" 
  • 
  *^"*^ 
  ^"'^ 
  ^^^ 
  membrane. 
  That 
  the 
  intrusive 
  

   lie 
  k 
  not 
  V%pTS 
  ^ot 
  certainly 
  proved 
  ; 
  that 
  it 
  is 
  dissolved 
  cellu- 
  

  

  onnosed 
  thpnr 
  pf^f.T,^*''^"? 
  T"^ 
  ^^^^ 
  ^he 
  above 
  that 
  the 
  two 
  long- 
  

   Xnciled 
  SrL>, 
  ^^ 
  ^'^7^^ 
  °^>^ 
  ^^" 
  ^^" 
  ^e^e 
  in 
  a 
  fair 
  way 
  to 
  be 
  

   oS 
  sint^ 
  in 
  «rS.^ 
  ^^"^ 
  ^^'^'}' 
  ^^^ 
  possibihty 
  of 
  intussusception 
  (in 
  the 
  

   other 
  cSs 
  n 
  «„rS.. 
  ^'®'' 
  ^u^ 
  Pa^ 
  ?.*' 
  °^^ 
  ^ 
  «^^ified 
  intussusception 
  for 
  

  

  ?he 
  orSnlrvlrS^^.^rr?'' 
  ^^'" 
  ?*^e^ 
  ^^^es 
  of 
  surface 
  growth 
  and 
  

   tne 
  ordinary 
  growth 
  m 
  thickness 
  are 
  by 
  apposition. 
  

  

  