AmafDi;'i874M  [  Disinfectants,  Antiseptics  and  Deodorizers.  183 
Eckstein  experimented  for  two  years  with  the  privy  of  his  house  in 
Vienna,  which  was  frequented  by  at  least  one  hundred  persons  daily. 
He  successively  tried  a  great  number  of  chemicals  in  various  methods, 
with  the  following  results  : 
1st.  When  an  aqueous  solution  of  two  pounds  of  iron  sulphate  was 
poured  into  the  well,  the  odor  of  sulph-hydric  acid  was  eliminated  for 
several  hours.  After  this  time  all  unpleasant  odor  had  disappeared, 
but  within  twelve  hours  the  effect  of  the  deodorizer  was  no  longer  per- 
ceptible. 
2d.  A  solution  of  sulphate  of  copper  behaved  in  the  same  manner. 
3d.  Two  pounds  of  iron  sulphate  in  crystals  exerted  a  deodorizing 
effect  for  two  entire  days ;  the  same  amount  of  copper  sulphate  in 
crystals  gave  analogous  results. 
4th.  Two  pounds  of  disinfecting  powder,  composed  of  a  mixture  of 
iron  and  copper  sulphates  with  carbolated  lime,  acted  for  only  two 
days. 
5th.  Sulphurous  acid,  in  a  liquid  form,  was  found  to  be  rapidly  ef- 
fective, but  it  proved  to  be  very  troublesome  to  the  organs  of  respi- 
ration for  an  hour,  and  it  was  dissipated  within  twenty-four  hours. 
6th.  One  ounce  of  red  carbolic  acid  disseminated  a  very  unpleasant 
tarry  odor  throughout  the  entire  house  for  two  days  ;  so  that  its  true 
effects  could  not  be  estimated,  as  one  fetid  odor  was  concealed  by  a 
still  worse  one. 
7th.  Two  pounds  of  iron  sulphate  in  crystals  were  introduced  into 
a  parchment  bag  and  put  into  the  cesspool.  No  result  was  observed 
until  after  two  hours,  and  but  little  sulph-hydric  acid  was  eliminated. 
The  place  was  thoroughly  deodorized  for  three  full  days.  When  the 
parchment  bag  was  removed  it  contained  only  a  turbid,  but  almost 
inodorous,  liquid. 
8th.  Two  pounds  of  commercial  chlorinated  lime,  of  high  test,  en- 
closed in  a  parchment  bag,  began  to  deodorize  within  two  hours  after 
being  deposited.  It  did  not  in  any  manner  inconvenience  either  the 
respiratory  or  the  olfactory  organs,  while  its  action  extended  over  a 
period  of  quite  nine  days. 
9th.  Two  ounces  of  crude  permanganate  of  sodium,  used  by  itself 
in  solution,  deodorized  almost  instantly,  but  all  traces  of  its  effects 
had  vanished  after  twenty-four  hours.  The  same  preparation,  when 
^enclosed  in  a  parchment  bag,  was  active  for  two  days. 
The  above  data  seem  to  demonstrate  conclusively  that  chlorinated 
