Am.  Jour.  Pharm,) 
Mar.,  1880.  J 
Varieties, 
Cure  for  Corns. — Gezow  recommends  the  following  as  reliable  and  palnlesss  : 
Dissolve  30  grams  of  salicylic  acid  and  5  grams  of  extract  of  cannabis  indica  in  240 
grams  of  collodion.  The  solution  is  applied  with  a  camel-hair  pencil. —  Fharm. 
Ztschr.f.  Russl.j  1879,  P-  5^°- 
Improved  Bleaching  Process  for  Animal  Tissues. — Tessie  du  Mothay  places 
the  substances  in  a  moderately  concentrated  solution  of  potassium  permanganate 
for  a  few  minutes  until  they  have  become  yellowish-brown,  and  then  into  a  solution 
of  sodium  bisulphite,  when  they  almost  immediately  become  white. — Ztschr.  d. 
Allg.  Oest.  Apoth.  Ver.,  from  Jahresber.  Phys.  Ver.  Frankft. 
Flowers,  grasses,  moss,  etc.,  may  be  readily  colored  by  allowing  them  to  remain 
for  12  to  24  hours  in  an  alum  solution,  drying  them,  and  then  placing  them,  until 
the  desired  shade  is  obtained,  into  a  not  too  concentrated  anilin  solution. 
A  purely  green  color  can  only  be  obtained  by  mixing  much  yellow  with  little 
blue.  Blue  flowers  are  turned  red  by  dilute  sulphuric  acid,  and  green  by  ammonia. 
Red  flowers  are  turned  green  by  ammonia,  and  yellow  flowers  brown. 
In  order  to  impart  a  nvhite  color  to  flowers,  grasses,  moss,  etc.,  they  are  exposed 
to  sulphurous  acid  vapors  ;  chlorine  water  cannot  be  used,  because  it  is  too  energetic. 
After  being  colored  the  plants  are  washed  carefully  and  dried. — Pharm.  Centralh,^. 
Jan.  22,  1880,  p.  35,  from  Fundgrube. 
Dyeing  with  Anilin  Black. — Gravitz  uses  for  100  kilograms  cotton  a  bath  of 
2,000  liters  water,  8  liters  pure  anilin  oil,  32  liters  hydrochloric  acid  and  17J  kilo- 
grams potassium  bichromate.  The  cotton,  previously  well  boiled,  is  allowed  to 
remain  in  the  bath  for  about  one  hour,  at  the  ordinary  temperature  5  the  bath  is  then 
gradually  heated  to  about  9o°C.,  and  this  temperature  is  retained  until  the  black  is 
no  longer  turned  greenish  by  sulphurous  acid.  The  black  obtained  does  not  turn 
green  when  in  contact  with  air  or  sulphurous  acid,  and  has  a  chestnut-brown  gloss 
after  washing,  which  can  be  changed  to  violet  or  blue  by  boiling  with  alkalies  or 
soap. — Pharm,  Centralh.,  1879,  P-  34^,  from  Deutsch.  Ind.  Ztg. 
The  presence  of  silk  in  textures  is  readily  ascertained,  according  to  Boettger,  by 
heating  to  the  boiling  point  with  a  solution  of  zinc  chloride  of  6o°B.,  when  silk  is 
dissolved,  while  linen  and  cotton  are  not  altered. —  Chem.  CentralbL,  Nov.  12,  1879, 
p.  734)  from  Jahresber.  d.  Phys.  Ver.  z.  Frkft. 
Bleaching  of  Gray  Feathers.— A.  Viol  and  C.  P.  Duflot's  method  of  bleaching 
gray  feathers  white  consists  in  suspending  them  at  a  temperature  of  at  ieasft  3o''C.  in 
rectified  oil  of  terpentine,  or  of  other  similar  oils  (f.  e.  oil  of  lavender,  thyme,  etc.), 
and  exposing  to  the  sun  5  in  this  liquid  they  are  allowed  to  remain,  being  at  the 
same  time  acted  upon  by  light  and  heat,  until  the  liquid  evaporates,  which  usually 
takes  3  or  4  weeks,  when  they  are  rinsed  off,  dried  and  blued.  Instead  of  in  the 
bleaching  liquid,  they  are  sometimes  suspended,  with  equal  success,  in  an  atmos- 
phere impregnated  with  the  vapors  of  one  of  the  oils  mentioned.— ^/oM.  Ztg.y  fyorr 
Drog.  Ztg. 
