EDITORIAL. 
187 
preservation  of  cream.  Repeated  analyses  have  proven  all  the  above  facts. 
There  is  more  philosophy  in  the  dairy  business  than  most  people  are 
aware  of. 
There  are  so  many  changes  which  are  constantly  occurring  to  the  dairy- 
man that  cause  variations  in  the  value  of  his  milk,  even  when  the  condi- 
tions of  feeding  are  the  same,  as  to  render  a  chemical  knowledge,  or  at 
least  ready  access  to  chemical  experiments  in  this  direction,  of  the  most 
economic  and  practical  importance.  It  is  true  that  the  animal  body  is  not 
a  mere  chemical  laboratory,  in  which  the  chemist  may  operate  as  he  pleases  ; 
for  there  is  a  power  there — a  vitality  superior  to  his  science;  but  by  his 
intelligent  concurrence  with,  and  proper  regard  for  that  vitality,  the 
changes  and  conditions  which  he  desires  can  very  generally  be  effected. — 
Druggists'  Circular,  Jan.  1867. 
tutorial  ^Department. 
School  of  Pharmacy. — We  are  informed  that  the  class  of  candidates  for 
,the  Diploma  of  the  Philadelphia  College  of  Pharmacy  is  much  larger  than 
ever  before,  and  that  the  commencement  ceremonies  are  to  be  held  in  the 
Academy  of  Music,  which  has  been  engaged  for  the  occasion,  which  is 
always  one  of  great  interest  to  the  junior  members  of  our  profession. 
Erratum. — In  the  editorial  note  at  page  473,  Sept.,  1866,  read  "vol. 
xxiv,,"  instead  of  "  vol.  xxxiv./'  as  there  printed  in  the  notice  of  Ameri- 
can Opium  Culture. 
Paris  Exposition. — The  time  for  this  great  exhibition  of  the  products  and 
manufactures  of  all  nations  is  rapidly  approaching  (to  open  April  1st),  and 
already  we  hear  of  many  preparing  to  visit  Europe,  under  the  stimulus  of 
seeing  this  grand  collection  of  interesting  objects.  Much  has  been  said 
about  the  difficulties  of  accommodation  to  visitors,  high  prices,  etc.  We 
cannot  but  believe  that  the  authorities  have  not  been  unmindful  of  what  is 
required  to  meet  the  emergencies  in  the  way  of  provision  and  accommoda- 
tion ;  and  whilst  living  will  probably  be  higher  than  at  ordinary  times, 
the  European  plan  of  paying  for  lodging  and  board  as  separate  items  will 
enable  persons  to  regulate  their  expenses  to  a  very  considerable  degree  by 
the  depth  of  their  purses.  The  following  extract  from  the  Chemical  News, 
of  London,  exhibits  a  novel  plan  of  visiting  Paris  by  the  thousand,  at  fixed 
times  and  rates  for  the  excursion  : 
Visitors  to  the  Paris  Exhibition. — Probably  many  of  our  readers  have  deter- 
mined to  visit  Paris  during  the  time  of  the  International  Exhibition.  It  may 
not  have  occurred  to  such  that  arrangements  for  such  visits  should  be  made 
at  once,  beforehand,  but  we  would  press  upon  all  the  necessity  of  making  them 
