178 
Japanese  Fuh-Oil, 
(  Am.  Jour.  Pharmi- 
X      April,  1883. 
A  NOTE  ON  MILK  ANALYSIS. 
By  Henry  Trimble,  Ph.G. 
Head  at  the  Pharmaceutical  Meeting,  March  20. 
In  a  paper  read  by  Dr.  P.  Vieth  before  the  Society  of  Public 
Analysists,  of  England,  the  figures  representing  the  average  of  12,349' 
analyses  of  milk  were  given,  as  follows : 
Specific  gravity,         Total  solids,  Fat,  Solids,  not  fat, 
1-0319.  1303  per  cent.       3-52  per  cent.       9*51  percent. 
These  samples  were  taken  during  the  year  1882,  and  the  results  as 
given  in  "  The  Analyst,"  for  March,  show  very  curious  and  interesting 
variations  for  the  different  months. 
In  the  same  issue  of  this  journal  is  a  paper  by  Dr.  W.  D.  Hogg,  of 
Paris,  on  the  work  done  by  the  "  Paris  Municipal  Laboratory."  This 
includes  the  average  of  900  analyses  of  milk,  with  the  following  re- 
sult : 
Specific  gravity,         Total  solids.  Fat,  Solids,  not  fat, 
1'033.  13  per  cent.  4  per  cent.  9  per  cent. 
I  now  give  the  average  of  thirteen  analyses  made  by  myself  during, 
the  past  eighteen  months  : 
Specific  gravity,  1*030.    Total  solids,  13*72  per  cent. 
Three  of  the  samples  were  pure  Alderney  milk,  the  others  were- 
mostly  samples  that  dealers  suspected  of  adulteration.  The  fat  was- 
estimated  in  a  few  only,  so  I  do  not  give  it  with  the  figures  of  the 
thirteen  analyses,  but  may  add  that  the  average  of  the  few  determina- 
tions was  4*18  per  cent.  The  extremes  of  specific  gravity  were  1*024 
and  1*034,  of  total  solids  11*63  and  15*73.  With  my  limited  experi- 
ence I  become  more  and  more  opposed  to  judging  milk  by  the  specific 
gravity.  It  is  usually  very  close  to  1*030,  but  very  frequently  a. 
sample  rich  in  fat  will  have  a  gravity  as  low  as  1*028. 
Japanese  Fish-Oil, —The  oil  is  extracted  during  the  process  of 
treating  fish-scrap  for  fertilizing  purposes,  and  was  refined  and  used 
in  Japan  before  the  introduction  of  petroleum,  for  illuminating  pur- 
poses. Recently  a  market  for  this  oil  has  been  found  in  Europe, 
chiefly  in  England,  where  it  is  used  for  about  the  same  purposes  as 
menhaden  oil,  which  it  resembles  in  appearance  and  properties.  It  is 
put  up  in  five-gallon  cans,  two  cans  to  the  case,  and  sells  in  England 
at  a  price  equivalent  to  30  cents  a  gallon. —  Oil,  Paint,  and  Drug 
Reporter,  1882,  Dec.  20th. 
