AmAp°rnr: fir rm" )       American  Medical  Association.  183 
penetrating  than  silver  nitrate.  It  is  said  to  be  useful  in  all  cases 
where  the  non-caustic  action  of  silver  nitrate  is  indicated.  Dosage. 
— It  may  be  used  in  the  anterior  urethra  in  0-25  to  I  per  cent,  solu- 
tion ;  in  the  posterior  urethra  in  from  I  to  4  per  cent,  solution;  in 
ophthalmology  in  5  per  cent,  solution.  Manufactured  by  Chemische 
Fabrik  auf  Actien,  vorm.  E.  Schering,  Berlin.  (Schering  &  Glatz, 
New  York.) 
ARGONIN. 
A  soluble  casein  compound  containing  4*28  per  cent,  of  silver. 
Actions  and  Uses. — Its  actions  and  uses  are  similar  to  those  of 
silver  nitrate,  but  it  is  claimed  to  have  greater  power  of  permeating 
living  colloid  membrane  than  other  silver  albumoses.  It  is  applied 
as  an  injection  in  o-i  to  0-2  per  cent,  solution  ;  in  ophthalmic  prac- 
tice a  10  to  20  per  cent,  solution  in  glycerin  may  be  used.  Dosage. 
— It  is  generally  used  in  0-5  per  cent,  solution,  but  even  20  per  cent, 
solutions  have  been  injected  without  producing  irritant  symptoms. 
Manufactured  by  Farbewerke  vorm.  Meister,  Lucius  &  Bruening, 
Hoechst  a.  M.  (Victor  Koechl  &  Co.,  New  York). 
ARGYROL. 
A  compound  of  a  derived  proteid  and  silver  oxide,  containing 
from  20  to  25  per  cent,  of  silver. 
Actions  and  Uses, — Solutions  of  argyrol  (20  to  50  per  cent.)  are 
said  to  be  non-irritating  to  mucous  membranes.  Taken  internally 
it  is  said  to  be  non-toxic.  It  is  claimed  to  be  an  antiseptic.  It  is 
recommended  in  urethritis  and  cystitis,  in  conjunctivitis  and  in 
affections  of  the  nose,  throat  and  ear.  Dosage. — It  is  employed  in 
from  10  to  25  per  cent,  and  even  stronger  solutions.  Manufactured 
by  Barnes  &  Hille,  Philadelphia. 
GLYCEROPHOSPHATES. 
The  salts  of  glycerophosphoric  acid  H2  (CH2OH-CHOH-CH2) 
P04 ;  usually  the  two  remaining  hydrogen  atoms  of  phosphoric  acid 
are  replaced  by  the  base  ;  Na2(CH2OH-CHOH-CH2)PO. 
Actions  and  Uses. — These  salts  were  introduced  as  "  nerve  foods  " 
and  tonics  on  the  theory  that  their  phosphorus,  being  a  step  nearer 
lecithin,  is  assimilated  more  readily  than  that  of  hypophosphites. 
Neither  the  experimental  nor  the  clinical  evidence  is  considered 
conclusive  by  all  authorities.    Dosage. — The  potassium  and  sodium 
