254  Quarterly  Reports  of  the  Chemical  Committee , 1882. 
The  manure  which  Mr.  R.  Gill  sent  me,  under  the  name  of 
bone-dust,  is  not  bone-dust,  but  a poor  refuse  manure,  for  which 
I should  be  sorry  to  have  to  pay  30s.  per  ton. 
No  further  information  was  obtained  from  Mr.  R.  Gill. 
8.  Mr.  A.  Warde,  West  Farleigh,  Kent,  bought  a sample  of 
dried  blood,  guaranteed  to  contain  10  per  cent,  of  ammonia,  at 
10/.  per  ton. 
On  analysis,  only  7^  per  cent.,  or  2J  per  cent,  less  ammonia 
than  the  guaranteed  percentage,  were  found,  for  which  defi- 
ciency an  allowance  of  21.  10s.  per  cent,  was  made  by  the 
vendors.  I append  Mr.  Warde’s  letter. 
“The  Lane  House,  Brandesburton,  Hull,  Yorkshire,  June  5th,  1882. 
“ Dear  Sir, — Your  letter  has  been  sent  to  me  here.  I shall  not  be  at  home 
before  the  15th  or  16th.  I bought  the  manure  from  an  agent  of  the  manu- 
facturers, living  at  Tunbridge  Wells,  but  cannot  remember  his  name  ; it  was 
guaranteed  to  me  to  contain  10  per  cent,  of  ammonia,  and  as  it  did  not  contain 
it,  one  quarter  of  the  price  was  allowed.  Now,  although  the  allowance  was 
made,  there  was  great  neglect  somewhere ; and  if  I had  not  have  had  the 
manure  analysed  I should  have  lost  50s.  per  ton.  I cannot  send  you  the 
correspondence,  and  I may  say  there  was  no  hesitation  on  the  part  of  the 
manufacturers  in  allowing  the  amount  claimed,  and  they  expressed  their  regret ; 
but,  nevertheless,  there  was  the  manure  sent  out  with  25  per  cent,  less 
ammonia  than  it  ought  to  have  contained. — Believe  me,  yours  truly, 
“ A.  Warde. 
“Dr.  Voelcker.” 
9.  Mrs.  Prescott,  Birches  Farm,  Tenbury,  Herefordshire, 
sent  me  a sample  of  manure,  of  which  she  bought  two  tons, 
believing  it  to  be  sulphate  of  ammonia.  On  analysis,  the 
sample  was  found  to  contain  only  14-29  per  cent,  of  ammonia. 
Good  commercial  sulphate  of  ammonia  contains  not  less  than 
24  per  cent,  of  ammonia,  or  10  per  cent,  more  than  the  sample 
analysed  for  Mrs.  Prescott.  Assuming  ammonia  to  sell  at  16s. 
per  unit  per  cent.,  the  sample  sent  by  Mrs.  Prescott  is  worth 
81.  per  ton  less  than  good  commercial  sulphate  of  ammonia. 
At  the  rate  of  16s.  per  unit  of  ammonia,  the  sample  sent  by 
Mrs.  Prescott  is  worth  about  11?.  4s.  per  ton,  and  is  certainly  far 
too  dear  at  16/.  a ton.  In  this  case  the  maker  issued  two 
circulars  with  identical  testimonials,  in  the  one  calling  the 
manure  “ . . . . sulphate  of  ammonia,”  and  in  the  other 
“ . . . . ammonia  manure;”  the  material  was  invoiced  as 
ammonia  manure,  and  sold  without  a guarantee. 
