572  British  Pharmaceutical  Conference.  {A™6vembe^™" 
This  paper  was  vigorously  discussed  and  elicited  a  considerable 
variance  of  opinions. 
Toxic  Principles  of  the  Cotiatice. — Prof.  C.  R.  Marshall  demonstrates 
that  the  various  members  of  the  coriariae,  although  widely  and 
somewhat  sparsely  distributed,  contain  closely  allied  toxic  ingre- 
dients. 
Some  Examples  of  Galenical  Preparations  made  on  the  Retail  Scale. 
— John  H.  Thomson  calls  attention  to  a  number  of  preparations 
that  may  be  made  profitably,  by  the  retail  pharmacist,  on  a  small 
scale. 
The  Official  Recognition  of  Antidiphtheria  Serum. — Thos.  Maben, 
F.C.S.,  maintains  that  the  use  of  this  serum  has  passed  the  experi- 
mental stage,  and  is  generally  recognized  by  the  medical  profession 
as  a  remedy  of  sufficient  importance  to  demand  official  recognition. 
He  further  recommends  that  the  German  Pharmacopoeial  standards 
and  methods  of  official  tests  be  adopted. 
Liquor  Kramerice  Concentrates,  B.P. — F.  C.  J.  Bird  demonstrates 
that  the  official  concentrated  solution  might  be  improved  by  the 
addition  of  5  per  cent,  of  alcohol,  or  better  still  10  per  cent,  of 
glycerin. 
New  Apparatus  for  Milk  Analysis. — G.  D.  MacDougald,  F.I.C., 
the  Dundee  public  analyst,  describes  a  new  apparatus  that  is  the 
outcome  of  repeated  attempts  to  devise  a  satisfactory  apparatus  for 
gravimetric  work. 
Bismuth  Salts  in  Mixtures. — Edmund  White,  B.Sc,  F.I.C.,  points 
out  that  the  efficacy  of  a  bismuth  mixture  depends  largely  on  the 
state  of  division  of  the  contained  bismuth  salt.  He  recommends 
the  use  of  a  freshly  precipitated  preparation,  and  contributes  the 
following  formula  for: 
Glycerinum  Bismuthi  Carbonatis. — Sixty  grammes  of  subnitrate  ot 
bismuth  are  dissolved  in  a  mixture  of  40  c.c.  of  nitric  acid  and  25 
c.c.  of  water.  The  resulting  solution  is  then  poured  into  a  solution 
containing  55  grammes  of  ammonium  carbonate  in  300  c.c.  of  water. 
Collect  the  precipitate  on  a  calico  filter,  wash,  drain  and  rub  the 
moist  precipitate  with  enough  glycerin  to  measure  100  c.c.  Each 
2  c.c.  of  this  mixture  is  equal  to  1  gramme  of  bismuth  subcar- 
bonate. 
Bismuth  Citrate  and  Liquor  Bismuthi. — Wm.  Duncan  believes  that 
bismuth  citrate  is  really  a  dibasic  acid,  having  the  formula  H2BIO- 
C6H607,  and  calls  it  bismuthyl  citric  acid. 
