Annual  Report  for  1909  of  the  Consulting  Chemist.  345 
foreign  material  of  this  kind,  and  a veterinary  examination 
and  certificate  is  a necessity.  But  should  ever  such  material 
be  detected  in  a cake  when  breaking  it  up,  the  delivery  should 
be  rejected  at  once  and  returned  to  the  vendor. 
4.  Soya  Bean  Cake. 
As  mentioned,  this  cake,  made  from  the  Soya  bean,  which 
is  grown  largely  in  China,  and  is  now  being  imported  mainly 
from  Manchuria,  has  come  very  widely  into  use.  It  is  un- 
doubtedly an  acquisition  to  our  list  of  feeding  materials  and, 
if  fed  with  care  at  first,  may  safely  be  used.  For  milking 
cows,  in  particular,  I think  it  likely  to  do  well,  and  I should 
consider  it  as  a fitting  substitute  for  decorticated  cotton  cake 
rather  than  for  linseed  cake,  inasmuch  as  it  is,  like  the  former, 
highly  nitrogenous  in  character,  while  its  oil  is  not  so  high  in 
quantity  as  in  linseed  cake,  nor  likely  to  adequately  replace 
linseed  oil  as  a feeding  constituent. 
The  following  analyses  represent  the  composition  of  the 
Soya  bean  and  of  a fair  average  sample  of  the  cake  as  now 
imported  ; — 
• Soya  Bean 
Soya  Bean 
Cake 
Moisture  .... 
10-41 
11-40 
Oil 
. 17-47 
6-12 
* Albuminous  compounds  . 
. 40-50 
42-78 
Soluble  carbohydrates,  &c. 
. 22-38 
28-41 
Woody  fibre 
4-21 
5-70 
^Mineral  matter  (ash) 
5-03 
5-59 
100-00 
100-00 
^ Containing  nitrogen . 
6-48 
6-85 
^ 1 ncluding  sand 
-20 
-37 
In  addition  to  the  cake,  there  is  also'  sometimes  sold  a 
“ Soya  bean  meal,”  which  has  had  the  oil  nearly  all  extracted 
by  chemical  solvents. 
So  far,  I have  almost  universally  found  Soya  bean  cake  (or 
the  meal)  to  be  free  from  adulteration  and  sound  in  condition. 
It  is  to  be  hoped  that  this  state  of  things  will  continue,  and 
also  that  the  lower  price  of  it  (about  6Z.  10s.  a ton),  which  has 
caused  it  to  replace  to  some  extent  other  feeding  materials, 
will  not  undergo  much  advance. 
The  question  of  the  manurial  value  of  Soya  bean  cake  has 
been  frequently  raised  of  late,  and,  having  been  asked  where 
we  would  place  the  cake  in  our  published  tables  of  manurial 
