104  Minutes  of  the  Pharmaceutical  Meeting.  { A  VeCis^™* 
Color-blindness.— M.  Delboeuf,  says  "  La  France  Medicale,"  has  found  that  when 
a  person  afflicted  with  color-blindness  looks  through  a  layer  of  fuchsin  in  solutiou 
his  infirmity  disappears.  M.  Javal  has  made  this  discovery  practical  by  interposing 
a  thin  layer  of  gelatin,  tinted  with  fuchsine,  between  two  glasses.  The  latter  are 
said  to  correct  the  difficulty. — Boston  Med.  and  Surg.  Journ. 
Nickel-plating  of  Iron  or  Steel  Without  a  Galvanic  Battery. — After  adding 
to  a  dilute  (5  to  10  per  cent.)  solution  of  pure  chloride  of  zinc  in  a  porcelain  dish 
sufficient  sulphate  of  nickel  to  produce  a  dark-green  coloration  and  heating  to  the 
boiling  point,  Prof.  Stolba  immerses  the  metal,  previously  well  cleaned,  into  this 
liquid,  and  boils  for  30  to  60  minutes,  when  the  metal  is  washed  off  with  chalk-water 
and  crefully  dried,  when  it  is  covered  with  a  durable  but  thin  plating  of  nickel. — 
Ztschr.  d.  Oest.  Apoth.,  Oct.  10,  1878,  from  Dingl.  Polyt  Jour. 
Electro-Deposition  of  Cobalt.  By  A  Gaiffe. — Cobalt  as  deposited  by  the  elec- 
tric current  is  preferable  to  iron  and  nickel  as  a  protective  surface  to  cliches,  &c, 
as  it  does  not  oxidize  like  iron,  and  when  necessary  it  can  be  readily  dissolved  by 
dilute  acids,  which  do  not  attack  the  copper  under-surface.  For  the  electro-depo- 
sition of  cobalt  on  copper  the  author  employed  a  neutral  solution  of  the  double  sul- 
phate of  cobalt  and  ammonium.  The  positive  electrode  is  connected  with  a  plat- 
inum or  preferably  with  a  cobalt  plate,  and  by  passing  a  regular  current  through  the 
solution  for  four  hours  an  adhering  and  regular  deposit  of  white  metallic  cobalt, 
0.025  mm.  in  thickness,  was  obtained. 
Becquerel  claims  to  have  already  described  a  method  similar  to  the  above  in  a 
paper  published  in  1S62. — Jour.  Chem.  Soc.y  Dec,  1878,  from  Compt.  Rend. 
MINUTES  OF  THE  PHARMACEUTICAL  MEETING. 
January  21st,  1879. 
In  the  absence  of  the  President,  Mr.  Alonzo  Robbins  was  elected  chairman. 
A  paper,  describing  a  general  apparatus  stand,  written  by  Mr.  A.  Robbins,  w<;s 
read  by  the  Registrar,  and  the  clamp  with  the  rod,  a  ring  and  bottle  support  were 
exhibited  to  the  meeting.    The  paper  was  illustrated  by  a  drawing,  and  the  stand 
