﻿( 
  xiv 
  ) 
  

  

  sufficient 
  to 
  produce 
  the 
  extreme 
  variation 
  in 
  darkness 
  caused 
  

   by 
  temperature, 
  a 
  further 
  lowering 
  of 
  the 
  temperature 
  havhig 
  no 
  

   further 
  effect 
  ' 
  (Ibid., 
  see 
  also 
  p. 
  158). 
  In 
  Mr. 
  Fenn's 
  experi- 
  

   ment 
  the 
  temperature 
  must 
  have 
  been 
  below 
  40° 
  ; 
  consequently 
  

   the 
  results 
  are 
  entirely 
  consistent 
  with 
  my 
  theory. 
  

  

  Yours 
  very 
  truly, 
  

   H. 
  Goss, 
  Esq." 
  F. 
  Mekrifield. 
  

  

  The 
  Secretary 
  also 
  read 
  the 
  following 
  letter 
  which 
  Lord 
  

   Walsingham 
  had 
  received 
  from 
  Sir 
  S. 
  A. 
  Blackwood, 
  the 
  

   Secretary 
  of 
  the 
  Post 
  Office, 
  in 
  answer 
  to 
  the 
  memorial 
  which, 
  

   on 
  behalf 
  of 
  the 
  Society, 
  had 
  been 
  submitted 
  to 
  the 
  

   Postmaster-General, 
  asking 
  that 
  small 
  parcels 
  containing 
  

   scientific 
  specimens 
  might 
  be 
  sent 
  to 
  places 
  abroad 
  at 
  the 
  

   reduced 
  rates 
  of 
  postage 
  applicable 
  to 
  packets 
  of 
  bond 
  fide 
  

   trade 
  patterns 
  and 
  samples 
  : 
  — 
  

  

  " 
  General 
  Post 
  Office, 
  London, 
  

   April 
  13th, 
  1891. 
  

  

  My 
  Lord, 
  

  

  Eeferring 
  to 
  your 
  Lordship's 
  letter 
  of 
  the 
  18th 
  

   of 
  last 
  month, 
  and 
  to 
  the 
  memorial 
  which 
  you 
  enclosed, 
  on 
  

   behalf 
  of 
  various 
  persons 
  engaged 
  in 
  scientific 
  studies, 
  I 
  am 
  

   directed 
  by 
  the 
  Postmaster-General 
  to 
  acquaint 
  you 
  that 
  he 
  

   is 
  anxious 
  to 
  give 
  effect, 
  so 
  far 
  as 
  lies 
  in 
  his 
  power, 
  to 
  the 
  

   desire 
  of 
  the 
  memorialists, 
  that 
  small 
  parcels 
  containing 
  

   scientific 
  specimens, 
  &c., 
  may 
  be 
  sent 
  to 
  places 
  abroad 
  at 
  

   the 
  reduced 
  rates 
  of 
  postage 
  at 
  present 
  applicable 
  only 
  to 
  

   packets 
  of 
  bona 
  fide 
  trade 
  patterns 
  and 
  samples. 
  

  

  Your 
  Lordship 
  will 
  no 
  doubt 
  be 
  glad 
  to 
  learn, 
  therefore, 
  

   that 
  so 
  far 
  as 
  this 
  Department 
  is 
  concerned, 
  scientific 
  speci- 
  

   mens 
  sent 
  by 
  sample 
  post, 
  and 
  addressed 
  to 
  places 
  abroad, 
  

   will 
  not 
  be 
  stopped 
  in 
  future 
  ; 
  but 
  I 
  must 
  state 
  that 
  this 
  

   Department 
  cannot 
  guarantee 
  the 
  delivery 
  of 
  such 
  specimens 
  

   abroad, 
  inasmuch 
  as 
  they 
  do 
  not 
  come 
  within 
  the 
  definition 
  

   of 
  sample 
  packets 
  as 
  prescribed 
  by 
  the 
  Postal 
  Union. 
  

  

  I 
  have 
  the 
  honour 
  to 
  be, 
  i^c, 
  

  

  S. 
  A. 
  Blackwood. 
  

  

  The 
  Rt. 
  Hon. 
  Lord 
  Walsingham, 
  F.E.S., 
  &c." 
  

  

  