Dairy  Cattle  and  the  Butter  Test. 
51 
The  samples  of  milk  from  the  thirteen  different  breeds 
of  cows  sent,  as  mentioned  above,  from  Gloucester  on  the 
morning  of  Wednesday,  June  23,  1909,  arrived  the  same 
afternoon  at  the  Cooper  Research  Laboratory. 
Fig.  9.— Guernsey.  Milk  x 500  diam. 
The  following  is  a report  from  Messrs.  Cooper,  Robinson 
& Nuttall  : — 
Report  prom  the  Cooper  Laboratory  for  Economic 
Research. 
The  milks  on  arrival  were  analysed  for  the  determination 
of  fat  by  Adam’s  Extraction  Method  with  petroleum  ether  as 
a solvent. 
