260 
Monobromated  Camphor, 
{Am.  Jour,  Pharm. 
June  1, 1872. 
zine,  benzol  and  alkalies  ;  it  forms  with  the  earths  and  metallic  oxides 
insoluble  salts,  the  baryta  salt  having  the  formula  C20H15PO2Ba.  Rab- 
bits and  dogs  bear  as  much  as  0*3  grm.  of  terebintho- phosphorous- 
acid,  in  alcoholic  solution,  without  any  toxical  effect ;  the  urine  ac- 
quires a  camphoraceous  odor,  and  the  distillate  reduces  silver  salts. 
It  has  not  been  ascertained  yet  whether  pure  oil  of  turpentine  (free 
from  oxygen)  is  an  antidote  to  phosphorus. — Ibid,,  No.  16,  from  Berh 
Klin.  Woclienschr. 
Tannin  containing  Iron  has  been  met  with  by  Dr.  H.  Hager.  It 
had  been  mixed  with  0*8  per  ct.  oxalic  acid,  which  prevented  the  ink 
color  from  appearing  when  dissolved  in  pure  water  ;  when,  however, 
the  water  contained  an  alkali,  the  blue-black  coloration  was  at  once- 
produced. — Ibid.,  No.  18. 
Prejjaration  of  Saffranin. — This  dye  stuff,  which  has  been  used  for 
some  time  as  a  substitute  for  safflower  for  dyeing  cotton  and  silk,  is 
prepared  by  heating  a  mixture  of  2  parts  nitrite  of  anilin  and  1  part 
arsenic  acid,  for  5  minutes,  to  between  80  and  120°  C.  The  mass  is 
poured  into  boiling  water,  and  the  solution  neutralized  with  chalky 
when  it  acquires  a  beautiful  red  color.  It  is  then  carefully  passed 
through  a  woollen  filter,  and  the  filtrate  precipitated  by  dissolving 
table  salt  in  it,  when,  after  some  time,  saffranin  is  deposited  and  may 
be  collected  on  a  filter. 
The  nitrite  of  anilin  is  made  by  passing  washed  nitrous  acid,  ob- 
tained from  starch  and  nitric  acid,  into  a  mixture  of  oily  anilin,  water 
and  salt,  the  process  being  completed  when  the  light  brown  color  has 
changed  to  a  deep  chestnut-brown.  After  washing  several  times  with 
water,  the  product  is  sufficiently  pure  for  the  above  purpose. — lbid.> 
from  Muster zeitung. 
NOTE  RELATIVE  TO  THE  MONOBROMATED  CAMPHOR. 
By  William  A.  Hammond,  M.D. 
Several  months  since,  a  statement*  was  made  in  The  Doctor  to  the 
effect  that  a  Belgian  physician  had  for  more  than  ten  years  past  made 
use  of  the  monobromated  camphor  in  delirium  tremens  and  analogous 
nervous  diseases.  Desiring  to  test  its  value  in  such  affections,  I  re- 
quested Dr.  Neergaard  to  obtain  a  quantity  of  the  preparation  for 
*  American  Journal  of  Pharmacy,  1872,  p.  84. 
