Quarterly  Reports  of  the  Chemical  Committee , 1882.  253 
“The  approximate  value  of  the  manure  per  ton  calculated  from  these  per- 
centages is  as  follows : — 
£.  s.  d. 
Organic  matter 
..  39 
25 
at 
10  s. 
per  ton 
19 
12 
6 
Sulphate  of  lime  .. 
8 
14 
j» 
30s. 
99 
12 
4 
2 
Phosphoric  acid  . . 
..  8 
06 
99 
407. 
99 
322 
8 
0 
Alkaline  salts 
1 
14 
99 
27. 
99 
2 
5 
2 
Ammonia 
..  5 
03 
99 
807. 
99 
402 
8 
0 
£758  17  10 
£7  11  9 
“ This  manure  is  very  good  value  for  77.  per  ton,  and  should  work  well 
without  either  requiring  the  addition  of  superphosphate  or  ammonia  salts.” 
This  case  clearly  illustrates  the  propriety  of  buying  artificial 
manures  on  the  strength  of  a definite  analytical  guarantee.  In 
many  instances  which  have  come  under  my  notice,  favourable 
reports  and  analyses  are  presented  to  buyers  of  inferior  manures 
which  often  are  not  worth  the  cost  of  cartage  to  any  distance  ; 
and  the  only  safeguard  against  imposition  in  buying  manures 
is  not  to  be  led  astray  by  unguaranteed  analyses  and  reports, 
but  to  demand  an  analytical  guarantee,  and  subsequently,  on 
delivery  of  the  manure,  to  have  an  analysis  made  which  will 
show  whether  or  not  the  dealer  or  manufacturer  has  fulfilled  his 
part  of  the  contract. 
6.  Mr.  E.  C.  Clarke,  Manor  House,  Haddenham,  Oxon,  sent 
me  a sample  of  so-called  shoddy,  which,  on  analysis,  was  found 
to  contain  only  2-29  per  cent,  of  nitrogen,  and  to  contain  hardly 
any  wool-refuse  ; it  was  full  of  weed-seeds,  dirt,  and  warehouse 
sweepings.  In  reply  to  the  usual  application  for  vendor’s  name 
and  address,  Mr.  Clarke  wrote  : — 
“ The  party  who  supplied  me  with  the  so-called  shoddy  will  take  it  all  back 
and  pay  carriage ; so  have  decided  not  to  trouble  more  about  it.” 
7.  The  following  is  the  composition  of  a sample  of  manure, 
wrongly  called  bone-dust,  sent  by  Mr.  R.  Gill,  Keele  Estate 
Office,  Newcastle,  Staffordshire  : — 
Moisture 24  • 61 
^Organic  matter  20  ’09 
l'hosphate  of  lime 1 ■ 94 
Oxide  of  iron  and  alumina  9 ‘04 
Alkaline  salts  and  magnesia  (chiefly  sulphate)  10.o- 
of  soda)  j ° 
Sulphate  of  lime  16‘04 
Insoluble  siliceous  matter  15 ‘01 
* Containing  nitrogen  . . 
Equal  to  ammonia 
100-00 
1-17 
1-42 
