AmMayri9^8.arm'}  Philadelphia  College  of  Pharmacy. 
369 
No.  11  Paraffin. — As  No.  10,  at  the  expense  of  the  soft  paraffin. 
No.  12  Paraffin. — As  No.  7,  but  with  brilliant  green,  0.05  per  cent. 
No.  jj  Paraffin. — As  No.  7,  but  with  flavine,  0.2  per  cent. 
No.  14  Paraffin. — As  No.  7,  but  with  dichloramine-T,  0.2  per 
cent. 
In  the  Jour.  Amer.  Med.  Assoc.,  191 7,  69,  1525,  appears  a  de- 
scription of  the  paraffin  required  for  film  treatment  known  as  "  sur- 
gical paraffin,"  or  "  plastic  paraffin."  It  is  required  to  be  more 
ductile  and  pliable  than  the  official  (U.  S.  P.)  paraffin,  and  to  be 
liquid  at  or  below  500  C.  A  thin  film,  when  prepared  and  tested  as 
described  below,  should  be  pliable  at  or  below  280  C.  and  ductile  at 
or  below  31 0  C.  At  body  temperature  it  should  be  pliable,  and 
adhere  to,  but  permit  ready  detachment  from  the  skin. 
Test. — The  pliability  and  ductility  of  paraffin  are  determined  as 
follows :  A  little  of  the  melted  substance  is  poured  on  water  having 
a  temperature  of  about  400  C,  so  as  to  form  a  number  of  separate 
films.  The  temperature  of  the  bath  is  then  gradually  lowered  by 
the  addition  of  cold  water  to  determine  the  pliability  and  ductility. 
The  film  while  immersed  in  water  is  doubled  on  itself  and  the  tem- 
perature of  the  water  observed  at  which  the  film  breaks  sharply  on 
one  fold  (pliability  test).  The  film  is  stretched  while  under  water, 
and  the  temperature  of  the  water  noted  at  which  the  film  breaks 
sharply  and  evenly  (ductility  test).  A  small  surface  of  the  forearm 
is  painted  with  melted  paraffin,  covered  with  a  thin  layer  of  cotton, 
another  coat  of  paraffin  painted  on  the  cotton ;  and  then  dressed  with 
cotton  and  bandage.  After  one  hour  the  film  should  remain  at- 
tached to  the  skin,  showing  it  is  adherent,  but  be  easily  removable. 
{To  be  continued) 
PHILADELPHIA  COLLEGE  OF  PHARMACY. 
Minutes  of  the  Annual  Meeting.  • 
The  annual  meeting  of  the  Philadelphia  College  of  Pharmacy 
was  held  March  25,  1918,  at  4  p.m.  in  the  Library. 
The  President,  Howard  B.  French,  presiding. 
The  minutes  of  the  quarterly  meeting  held  December  31,  191 7, 
and  the  special  meeting  held  January  2,  1918,  were  read  and  ap- 
proved. 
