Am.  Jour.Pharm. ) 
May,  1883.  | 
Camphorated  Sulphu?-  Lotion. 
2e55  ' 
The  alcohol  extracts  contain  tannin  and  other  organic  acids,  extract- 
ives, the  remaining  alkaloids,  glucosides  and  resins.  Not  having  a 
Oooch's  filter,  I  discontinued  the  estimation  of  the  alcohol  extract, 
but  estimated  the  tannin  according  to  a  method  given  in  the  "  Chem- 
ical News,"  vol.  xxix,  page  189,  and  obtained  4*2  per  cent. 
Per  cent, 
of  drug. 
Total  cold  water  extract :  gums  and  dextrin,         .  .  .3-9 
Ash,  .......  1-05 
8tarch  from  acid  extract,  .....  6*85 
The  remainder,  being  albuminous  substances  and  cellulose,  amount- 
ing to  .......  48-17 
I  also  obtained  a  greenish  colored  resinoid  in  the  same  manner  that 
resin  of  podophyllin  is  obtained  from  the  alcoholic  extract  of  podo- 
phyllum. 
I  also  think  that  the  antiseptic  properties  of  the  drug  are  due  to  the 
volatile  oil,  which  I  think  is  an  aldehyde,  being  changed  to  an  acid  on 
oxidation.    I  will  try  and  prove  by  further  experiment. 
MICROSCOPICAL  EXAMINATION. 
The  upper  side  of  the  leaf  is  depressed  at  the  midrib,  and  the  under 
side  elevated.  The  epidermis  is  composed  of  thick-walled  empty  cells 
and  a  thick  cuticle.  Next  come  two  rows  of  palisade  cells,  filled  with 
starch  and  chlorophyll.  Between  the  palisade  cells  and  lower  epider- 
mis are  thick- walled  parenchyma.  Among  this  there  are  oil  and  resin 
cells  and  intercellular  spaces.  •The  resin  cells  seem  to  have  a  cellular 
structure.  The  midrib  is  composed  of  three  zones,  the  upper  and 
lower  zones  made  up  of  bast-fibre,  and  the  middle  one  of  wood  pro- 
senchyma.  In  the  drawing  I  have  represented  a  branch  of  the  mid- 
rib, composed  of  reticulated  vessels.  The  only  ditFerence  between  the 
•cross  and  longitudinal  is  the  elongation  of  cells  in  the  longitudinal 
section. — Therapemtic  Gazette,  Aug.,  1882,  pp.  284—286. 
Camphorated  Sulphur  Lotion. — Pierre  Yigier  recommends  the 
folloAving  modification  of  the  lotion  au  soufre  et  au  camphre :  Rose-water 
250,  camphor  30,  precipitated  sulphur  20,  powdered  gum  arable  8  parts. 
This  remains  a  homogenious  mixture  for  a  considerable  length  of  time 
and,  when  in  the  course  of  time  the  insoluble  constituents  have  separa- 
ted, may  again  be  made  uniform  by  gentle  agitation. — N.  Y.  Med. 
Jour,,  Jan.  20,  1883.    Gaz.  Hehdom.  Med.  et  Chir. 
