Am"j^y^i9i4arm'}    Philadelphia  College  of  Pharmacy.  329 
tion  should  correspond  to  the  requirements  of  the  British  Pharma- 
copoeia for  liquid  paraffin  and  have  a  specific  gravity  of  about  0.885 
to  0.890  at  150  C.  It  is  insoluble  in  water  or  alcohol,  but  soluble  in 
boiling  absolute  alcohol  and  readily  soluble  in  ether,  choloroform, 
carbon  disulphide,  petroleum  benzin,  benzene,  and  fixed  and  vola- 
tile oils.  It  serves  as  a  solvent  for  volatile  oils  and  related  sub- 
stances like  camphor,  menthol  and  thymol. 
This  is  the  type  of  preparation  used  by  Sir  W.  Arbuthnot  Lane, 
and  his  associates  for  internal  administration.  It  is  also  used  as  a. 
basis  for  ointments  and  salves  and  as  a  local  application  to  wounds, 
ulcers  and  in  certain  forms  of  skin  diseases  in  which  a  simple  pro- 
tective is  desired. 
Petrolatum  Liquidum,  Leve. — Light  (Russian)  Liquid  Petro- 
latum.— A  transparent,  colorless,  tasteless,  non-fluorescent,  oily 
liquid,  odorless  when  cold,  but  giving  off  a  faint  petroleum  odor  on 
heating.  In  other  respects  this  preparation  should  correspond  to 
the  pharmacopoeial  tests  for  liquid  petrolatum  and  have  a  specific 
gravity  of  about  0.860  to  0.875  at  I5°  C.  Like  the  heavy  variety 
of  liquid  petrolatum,  it  is  insoluble  in  water  and  alcohol,  but  soluble 
in  boiling  absolute  alcohol  and  readily  soluble  in  ether,  chloroform, 
carbon  disulphide,  petroleum  benzin,  benzene  and  fixed  and  volatile 
oils.  It  serves  as  a  solvent  for  volatile  oils  and  related  substances 
like  camphor,  menthol  and  thymol. 
This  is  a  type  of  preparation  extensively  used  as  a  vehicle  for 
the  oily  sprays  in  nose  and  throat  work.  It  is  also  being  used  as  one 
of  the  constituents  in  the  now  popular  paraffin  oil  cold  cream  and 
has  been  used  to  some  extent  for  internal  administration  in  the 
treatment  of  chronic  stasis.  Being  more  limpid  than  the  preparation 
preferred  by  Lane,  it  is  more  readily  taken,  though  greater  care  must 
be  exercised  in  securing  a  sample  devoid  of  the  lighter  fractions  of 
petroleum  distillates. 
PHILADELPHIA  COLLEGE  OF  PHARMACY. 
NINETY-THIRD  ANNUAL  COMMENCEMENT. 
The  commencement  exercises  on  Thursday,  June  18th,  brought 
to  a  close  one  of  the  most  successful  commencement  weeks  in  the 
history  of  the  Philadelphia  College  of  Pharmacy.  A  very  large 
number  of  the  alumni  visited  the  college  and  attended  the  various 
functions.    The  Baccalaureate  services  were  held  at  the  Church  of 
