102  NOTICE  OF  M.  Carre's  apparatus  for  making  ice. 
the  same ;  the  color  only  seemed  to  have  become  a  little  lighter, 
the  odor  had  entirely  disappeared,  and,  by  testing  for  its  strength, 
the  result  showed  that  it  had  lost  none,  as  one  fluid-ounce  dis- 
solved still  one  a  half  drachms  of  coagulated  albumen. 
Before  concluding,  some  remarks  on  the  proper  form  of  ex- 
hibiting liquid  Pepsin  may  not  be  out  of  place.  Some  physi- 
cians and  druggists  to  whom  I  have  spoken,  expressed  them- 
selves in  favor  of  elixir  or  wine,  believing  it  would  thereby  be 
more  pleasing  to  the  palate.  That  the  liquid  Pepsin  prepared  in 
the  above  way  is  a  clear  liquid,  not  objectionable  to  the  eye  or 
palate,  I  have  related  above  ;  and  the  faint  odor  which  it  has 
when  first  prepared  is  so  trifling,  that  those  who  are  compelled 
to  take  such  a  medicine  do  not  care  for,  when  they  find  relief  by 
it.  A  physician  may  add  something  to  it  to  change  the  color 
and  taste  whenever  he  prescribes  it,  and  in  this  case  I  would 
suggest  some  aromatic  syrup  ;  but  to  add  alcohol  to  it  and  make 
it  up  in  form  of  an  elixir,  I  am,  by  my  experiments,  utterly  op- 
posed to.  A  medicine  pleasing  to  the  eye  and  agreeable  to  the 
palate  is  no  doubt  more  acceptable  to  the  patient,  but  when,  as 
in  many  cases,  the  real  value  of  a  medicine  has  to  be  sacrificed 
to  the  external  appearance,  it  ought  to  be  discountenanced. 
Louisville y  Ky.,  January^  1870. 
NOTICE  OF  M.  CARRE'S  APPARATUS  FOR  MAKING  ICE. 
By  the  Editor. 
A  few  weeks  since  we  had  the  pleasure  of  visiting  this  appa- 
ratus in  full  operation  at  the  machine  works  of  Messrs.  I.  P. 
Morris  &  Co.,  of  Philadelphia,  where  this  firm  have  erected  it 
under  the  supervision  of  the  American  representative  of  the 
patentee,  Mr.  Bujac,  of  New  York.  It  will  be  recollected  by 
some  of  our  readers  that  M.  Carre's  invention  consists  in  the  use 
of  ammoniacal  gas  liquified  by  pressure,  as  his  agent  for  freezing 
water,  which  it  does  by  abstracting  and  rendering  latent  the 
heat  of  the  water  necessary  to  its  liquid  condition.  The  manner 
of  using  the  ammonia  to  efi'ect  this  purpose  is  exceedingly  inge- 
nious, and  apparently  paradoxical,  inasmuch  as  heat  is  applied 
to  produce  cold ;  and  this  is  the  chief  claim  of  originality  made 
