476 
VARIETIES. 
urine  of  the  horse,  that  a  chemist,  M.  Roussin,  has  undertaken  to  find  out 
whether  these  differences  are  those  of  calculation  or  are  really  well  founded. 
After  numerous  determinations,  he  has  recognized  the  fact  that  the  propor- 
tions of  hippuric  acid  vary  like  the  urea  according  as  the  horse  is  at  work 
or  rest.  The  following  table  contains  the  results  of  the  trials.  The  urea 
has  been  determined  in  the  condition  of  dry  nitrate. 
Hippuric  acid 
in  1  litre. 
Nitrate  of  urea 
in  1  litre. 
I. 
Omnibus  horses, 
7.8  grammes 
2. 
"        "        at  work,  : 
10.0 
18  grammes 
3. 
Arabian  stallions,  completely  quiet, 
0.0 
32 
4. 
tt              tt                    tt  tt 
0.0 
35 
5. 
it              tt                   tt  n 
0.0 
33 
6. 
tt              tt                   tt  tt 
0.0 
34 
7. 
"     horses  at  work, 
5.0 
21 
8. 
"     horses  fatigued  by  a  long  course,  13*0  " 
12 
9. 
"     horse  after  a  very  long  course,  14.0  " 
15 
Hence  it  is  clear  that  horses  fatigued  produce  much  hippuric  acid  and 
comparatively  little  urea.  Horses  well  fed  and  quiet  produce  little  or  no 
hippuric  acid.  Urea  on  the  contrary  is  found  in  their  urine  in  very  large 
proportions.  Its  limpidity  may  be  the  index.  If  the  liquid  is  clear  and 
deposits  little  carbonate  of  lime,  it  has  much  urea  and  little  hippuric  acid  ; 
if  it  is  muddy,  it  is  certain  that  there  is  much  hippuric  acid.  Respiratory 
activity  and  the  employment  of  muscular  force  accordingly  seem  to  trans- 
form urea  into  hippuric  acid.  Rest,  on  the  contrary,  leaves  the  urea  in- 
tact, and  does  not  appear  to  favor  its  transformation  into  hippuric  acid. — 
American  Journal  of  Science  and  Arts. 
Dr.  Mclntire's  Anti-Dyspeptic  Pill. — We  perceive  that  the  formula  for 
the  above  pill,  published  in  our  last  No.,  is  rendered  by  some  typographical 
errors  entirely  unintelligible.  It  should  be  as  follows :  R  Potass,  sulph. 
3ij  ;  Cubeb.  pulv.  ;  Ginger,  pulv.,  Rhei  pulv.  a  a  gss  ;  01.  Gaultheria  gtt. 
xx ;  Mucillag.  Acac.  q.  s.;  M.  Ft.  Pill  No.  lxx.  Dose  ; — one  before  each 
meal. — New  Hampshire  Jour,  of  Med, 
The  Adhesive  Iodine  Paint. — The  following  is  the  formula  for  preparing 
an  iodine  paint,  which  is  made  adhesive  by  the  addition  of  mastic,  and  is 
thus  prevented  from  spreading  too  much  when  applied  to  the  skin.  As 
the  value  of  this  application  in  chronic  inflammations  of  the  eyelids  is 
becoming  recognized,  it  is  evidently  important  that  we  should  be  enabled 
to  apply  the  paint  so  as  to  prevent  its  spreading  on  the  more  delicate  struc- 
tures in  the  neighborhood.  {$!  Spirits  vin.  rect.  gij  ;  spirits,  seth.  nitr.  giv; 
mastic,  gss.;  iodinii  ad  sat.  This  is  the  preparation  used  at  the  Moorfields 
opthalmic  hospital  with  great  success  as  a  counter-irritant. — Virginia 
Medical  Journal. 
