GLEANINGS  FROM  GERMAN  JOURNALS. 
318 
virus  of  cow's  pox  as  the  surest  prophylactic  against  cholera. 
The  town  of  8000  inhabitants  was  visited  by  the  small-pox  from 
December,  1865,  to  July,  1866,  and  by  the  cholera  from  August 
25  to  October  10,  1866,  with  550  cases  and  160  deaths  from  the 
latter.  Children,  up  to  three  years  of  age,  once  vaccinated,  re- 
mained free  from  cholera ;  not  a  single  case  of  cholera  occurred 
amongst  those  vaccinated  the  same  year,  or  who  had  been  at- 
tacked by  variola  or  varioloids.  The  fact  is  certainly  remarka- 
ble that  amongst  500  persons,  revaccinated  by  Otto,  not  a  single 
case  of  cholera  occurred.  "  Vaccination  with  quassia  as  a  pro- 
phylactic against  cholera  has  not  given  the  expected  result." — 
Pharm.  Central  II.  "1867,  343. 
Detection  of  Ergot  in  Flour.  Berlandt  objects  to  the  recog- 
nition of  ergot  from  the  odor  evolved  by  the  action  of  caustic 
potassa  upon  the  flour,  and  recommends  the  decomposition  of 
propylamin  (C6H9N  —  2C2H4+C2NH)  into  marsh  gas  and  hydro- 
cyanic acid  as  perfectly  accurate,  i  part  of  the  flour,  1  caustic 
potassa,  and  6  water  are  introduced  into  a  small  flask,  which  is 
connected,  first,  with  a  chloride  of  calcium  tube,  and  then  with 
a  combustion  tube  of  5  mm.  diameter,  placed  in  a  combustion 
furnace  ;  this  tube  is  connected  with  a  Liebig's  potassa  apparatus 
containing  distilled  water.  The  combustion  tube  is  first  heated 
to  redness,  then  the  flask  is  heated  for  half  an  hour,  while  the 
potassa  apparatus  is  kept  in  ice.  This  liquid  is  afterwards  mixed 
with  sulphide  of  ammonium,  evaporated  to  dryness  and  dissolved 
in  little  water.  A  few  drops  of  this  solution  produce,  with  a  drop 
of  dilute  sesquichloride  of  iron,  a  blood-red  color,  in  consequence 
of  the  formation  of  sulphocyanide  of  iron. — Archiv  d.  Pharm. 
1868,  382. 
Oopain  Mege  de  Jozeau  is  prepared  by  adding  concentrated 
nitric  acid  to  copaiva  until  effervescence  ceases  ;  the  mass  is  then 
washed  with  water  to  remove  all  acid  reaction.  Ten  parts  of 
this  are  mixed  with  one  part  each  of  cubebs,  bicarbonate  of  soda 
.fond  calcined  magnesia,  made  into  a  mass  with  mucilage,  and 
formed  into  oval  pills,  which  are  coated  with  colored  sugar.  (Ph. 
Cent.  Halle,  1866,  N.  52). 
Sulphurous  acid  may  be  prepared,  according  to  Franz  Stolba, 
