ARMENIAN  OR  DIAMOND  CEMENT. 
57 
some  out-door  exercise.  When  I  remained  quiet,  in  my  warm 
office,  there  was  from  one  to  one  and  a  half  pounds  less  secre- 
tion than  when  exercising.  I  also  repeated  the  same  experiment 
on  my  children,  and  found,  to  my  entire  satisfaction,  that  this 
article  possesses  most  valuable  diuretic  powers,  and  there  seemed 
to  be  no  disagreeable  symptoms  following  its  use,  excepting  a 
slight  degree  of  flatulency  and  a  looseness  of  the  bowels  pro- 
duced, the  latter  of  which  is  not,  unfrequently,  very  desirabk, 
particularly  in  dysuria,  where  there  is  irritation  of  the  neck  of 
the  bladder  and  urethra,  or,  even  in  strangury,  where  there  is 
absolute  inflammation  of  the  urinary  passages.  This,  to  me,  is 
the  more  evident,  from  the  enormous  quantity  of  urine  secreted, 
and,  consequently,  any  irritating  quality  that  it  might  contain 
would  be  so  diluted  as  to  be  -rendered  entirely  mild  and  inoffen- 
sive to  the  delicate  structure  of  the  urinary  passages. 
"  One  advantage  this  article  has  over  many  others  of  its  class 
is,  that  it  is  entirely  palatable  and  inoffensive  to  the  stomach, 
producing  no  irritation  or  nausea  of  the  latter  organ." — Amer. 
Journ.  Med.  Sci.,  October,  1865. 
ARMENIAN  OR  DIAMOND  CEMENT. 
This  article,  so  much  esteemed  for  uniting  pieces  of  broken 
glass,  for  repairing  precious  stones,  and  for  cementing  them  to 
watch-cases  and  other  ornaments,  is  made  by  soaking  isinglass 
in  water  until  it  becomes  quite  soft,  and  then  mixing  it  with 
spirit  in  which  a  little  gum  mastic  and  ammoniacum  have  been 
dissolved.  The  jewellers  of  Turkey,  who  are  mostly  Armenians, 
have  a  singular  method  of  ornamenting  watch-cases,  &c,  with 
diamonds  and  other  precious  stones,  by  simply  glueing  or  cement- 
ing them  on.  The  stone  is  set  in  silver  or  gold,  and  the  lower 
part  of  the  metal  made  flat,  or  to  correspond  with  the  part  to 
which  it  is  to  be  fixed ;  it  is  then  warmed  gently,  and  has  the 
glue  applied,  which  is  so  very  strong  that  the  parts  so  cemented 
never  separate.  This  glue,  which  will  strongly  unite  bits  01 
glass,  and  even  polished  steel,  and  may  be  applied  to  a  variety 
of  useful  purposes,  is  thus  made  in  Turkey :— Dissolve  five  or 
six  bits  of  gum  mastic,  each  the  size  of  a  large  pea,  in  as  much 
