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X. — Quarterly  Reports  of  the  Chemical  Committee,  1882. 
* March,  1882. 
1.  Mr.  Grosvenor  Hodgkinson,  Balderton,  Newark-upon- 
Trent,  sent  a sample  of  manure,  described  as  dissolved  bones, 
which  on  analysis  was  found  to  have  the  following  composi- 
tion : — 
Moisture 16  ’95 
•Organic  matter  28  • 20 
Phosphate  of  lime 7*35 
Carbonate  of  lime,  oxide  of  iron  and  alumina,)  44.. oq 
common  salt,  &c.  j 
Insoluble  siliceous  matter  3*30 
100-00 
* Containing  nitrogen 1-53 
Equal  to  ammonia  1-86 
This  manure,  it  will  be  seen,  contained  no  soluble  phosphate 
of  lime,  and  only  7 -3-  per  cent,  of  insoluble  phosphate  of  lime, 
and  consequently  cannot  properly  be  called  dissolved  bones. 
It  contained  much  carbonate  of  lime,  common  salt,  and 
organic  refuse  matters,  and  was  scarcely  worth  21.  10s.  per  ton. 
The  manure  was  offered  for  sale  as  Pure  Dissolved  Bones  at 
GZ.  15s.  per  ton,  but  in  consequence  of  the  preceding  unsatis- 
factory analysis,  no  order  was  given. 
2.  Mr.  M.  Savidge,  Sarsden  Lodge  Farm,  Chipping  Norton, 
sent  for  analysis  half  a cotton-cake,  marked  “ pure,”  taken  from 
a lot  of  two  tons,  and  informed  Dr.  Voelcker  at  the  same  time 
that  his  cattle,  which  had  been  eating  cotton-cake  with  roots 
all  the  winter,  from  some  cause  or  other,  refused  to  eat  the  cake 
from  the  two  ton  lot,  a sample  of  which  was  sent  for  analysis. 
This  cake  contained  in  100  parts — 
Moisture 11-40 
Oil 4'07 
•Albuminous  compounds  19*31 
Mucilage,  sugar,  and  digestible  fibre  ..  ..  29"33 
Woody  fibre  (cellulose) 19 "87 
Phosphate  of  lime  and  magnesia 3*50 
Carbonate  of  lime 3 ’71 
Sulphate  of  lime  4 -87 
Alkaline  salts,  &c 1"93 
Insoluble  siliceous  matter  2 "01 
100-00 
* Containing  nitrogen 3-09 
These  results  show  that  the  cake  is  poorer  in  oil  and 
albuminous  compounds  than  good  undecorticated  cotton-cake, 
