Quarterly  Reports  of  the  Chemical  Committee,  1882.  255 
December,  1882. 
Dr.  Voelcker  reported  the  following  cases  : — • 
1.  A sample  of  dissolved  bones,  sent  by  Mr.  Robert  Tinnis- 
wood,  Rose  Bank,  Carlisle,  on  analysis  gave  the  following 
results  : — 
Moisture 19  ’01 
*Organic  matter  18 '89 
Phosphate  of  lime 11 '98 
Sulphate  of  lime  82  "37 
Oxide  of  iron  and  alumina,  magnesia,  alkaline)  -11.49 
salts,  &c ) 
Insoluble  siliceous  matter  5 '73 
100-00 
* Containing  nitrogen -81 
Equal  to  ammonia  1 ' 02 
This  manure,  it  will  be  seen,  contained  no  soluble  phosphate 
of  lime,  only  12  per  cent,  of  insoluble  phosphates,  and  not 
quite  1 per  cent,  of  nitrogen,  which  was  present  mainly  in  the 
form  of  shoddy. 
Such  a manure  should  not  be  sold  under  the  name  of  dis- 
solved bone. 
It  was  sold  at  71.  10s.  per  ton  on  credit,  or  at  6/.  per  ton  for 
cash,  but  was  scarcely  worth  SI.  per  ton. 
The  name  and  address  of  the  vendor  of  this  manure  was  not 
given  by  Mr.  Tinniswood. 
2.  A sample  of  inferior,  or  adulterated,  nitrate  of  soda,  sent 
by  Mr.  Jas.  Swinnerton,  Cauldwell,  Burton-on-Trent,  had  the 
following  composition 
Moisture 2 ■ 81 
Chloride  of  sodium 9'75 
Other  impurities  -31 
Pure  nitrate  of  soda  87  ■ 13 
100-00 
This  nitrate  was  sold  at  15/.  10s.  per  ton  at  a time  when  the 
wholesale  price  of  nitrate  of  soda  was  quoted  in  Liverpool  at 
12/.  15s.  per  ton. 
Good  nitrate  of  soda  usually  contains  not  less  than  95  per 
cent,  of  pure  nitrate.  The  sample  sent  to  me  by  Mr.  Jas. 
Swinnerton  would  be  worth  14/.  4s.  per  ton,  supposing  good 
nitrate  of  soda  to  be  worth  15/.  10s.  per  ton,  which  latter  price, 
