^rm.  j  Revfew  0f  Advances  in  Pharmacy. 
653 
the  solid  part  being  0.9055..  the  saponification  value  239.8;  the  liquid 
portion  had  a  sp.  gr.  0.9119,  and  saponification  value  of  207.4.  The 
sugars  found  present  were  lsevulose,  dextrose,  and  possibly  cane 
sugar. — Chem.  News,  1919,  118,  242-243,  through  The  Analyst, 
July.  1919,  page  238. 
Estimation  of  Lactose  and  Proteins  in  Milk  Preserved  with 
Potassium  Bichromate . — Polarimetric  estimation  of  lactose  in  milk 
containing  this  chemical  as  a  preservative  is  unreliable,  as  the  quan- 
tity of  sugar  found  decreases  gradually  until  after  about  70  days 
only  50  per  cent,  of  the  amount  originally  present  is  obtained.  How- 
ever, the  quantity  of  lactose  does  not  show  any  decrease  during  this 
period,  when  it  is  estimated  by  determining  its  copper-reducing 
activity.  Casein  also  shows  considerable  change ;  while  the  quantity 
of  total  protein  remains  the  same,  the  casein  (protein  precipitated 
by  acetic  acid;  decreases  2.58  to  2.10  per  cent,  in  40  days. — Ann. 
Falsific,  1919,  11,  78-79,  through  The  Analyst,  July,  1919,  page  237. 
Oil  of  Ceratotheca  sesamoids. — The  plant  is  allied  to  Sesamum 
indicwm  (Gingelly),  and  the  specimen  investigated  came  from  the 
Gold  Coast,  and  is  known  in  that  region  under  the  name  "  Bungu." 
The  seeds  are  similar  to  the  white  Sesamum  indicwm  in  general 
appearance,  somewhat  reddish  brown  in  color  and  larger  than  the 
latter,  100  seeds  weighing  0.34  and  0.24  respectively.  The  seeds  are 
more  flat  than  Sesamum  indicum,  and  the  edges  are  darker  in  color 
than  the  rest  of  the  seed  and  have  a  serrated  appearance. 
On  extracting  the  ground  seed  with  petroleum  ether  there  was 
obtained  35.47  per  cent,  of  a  pale  yellow  oil  with  a  slight  nutty 
flavor.    On  standing  there  was  precipitated  some  "  stearine." 
The  following  analytical  figures  were  obtained  for  the  oil : 
Saponification  value    190.20 
Unsaponifiable  matter    1-53% 
Iodine  value   
Refractive  index  at  400  C.  zeiss, 
Free  fatty  acids  (as  oleic) 
Specific  gravity  150  C  
Baudouin  reaction   
Halphen  reaction   
negative, 
negative. 
110.60 
59-6o 
0.63% 
0.9163 
That  the  Baudouin  test,  which  is  such  a  delicate  color  reaction 
for  Sesamum  indicum,  should  prove  negative  is  noteworthy,  in  view 
