35^  Gleanings  from  the  German  Journals.  {Am)liy%££tn' 
sick  chambers,  and  the  building  of  large  fires  in  the  open  air  for 
destroying   miasmas  during  epidemics. — Archiv  d.  Pharm.,  May,  1879,, 
p.  385- 
Solubility  of  Salicylates. — Zinc  Salicylate. —  According  to  Dr. 
Vulpius  about  four  per  cent,  of  this  salt  will  dissolve  in  water,  but  such 
a  solution  is  then  over-saturated  and  a  portion  will  separate  on  standings 
but  a  solution  containing  one  or  two  per  cent,  is  permanent.  The  salt 
is  very  soluble  in  alcohol  and  ether,  and  a  fifty  per  cent,  alcoholic  solu- 
tion can  be  diluted  with  three  times  its  weight  of  water  without  precip- 
tating  much  of  the  salt. 
Copper  Salycilate. — Not  more  than  two  per  cent,  is  soluble  in  water  j. 
it  is  readily  soluble  in  alcohol,  but  not  in  ether  (the  latter  precipitates 
it  from  an  alcoholic  solution);  a  concentrated  alcoholic  solution  cannot 
be  diluted  with  water  without  precipitating  the  salt,  while  a  solution  of 
one  part  of  the  salt  in  five  of  alcohol  bears  dilution  with  four  times  its 
volume  of  water  without  separating. 
Atropia  Salicylate  it  readily  soluble  in  alcohol,  ether  and  water,  and  is 
even  hygroscopic. — Archiv  d.  Pharm.,  March,  1879,  p.  239. 
Solubility  of  Iodoform. — Dr.  Vulpius  finds  iodoform  soluble  in  six 
parts  of  ether  at  ordinary  temperature,  while  absolute  alcohol  dissolves 
four  per  cent.,  and  glycerin  containing  very  little  water  dissolves  one 
per  cent,  at  ioo°C,  more  than  half  of  which  separates  again  on  cool- 
ing ;  hot  olive  oil  dissolves  twenty  per  cent.,  eighteen  per  cent,  of  whicl\ 
separates  on  cooling. — Archiv  d.  Pharm.,  March,  1879,  p.  242. 
Note  on  Hesse's  Quinia  Test  (see  "Amer.  Jour.  Pharm.,"* 
March,  1879,  p.  135). — When  testing  pure  quinia  sulphate  in  Hesse's 
quininometer,  Chr.  Rump  noticed  that  immediately  on  the  addition  of 
the  ether  an  insoluble  gelatinous  residue  remained,  which  might  easily 
be  mistaken  for  impurities  or  adulterations  ;  this  is  prevented,  according 
to  the  author,  by  acidulating  the  mixture  previously  and  then  again  add- 
ing ammonia,  when  the  quinia  yields  a  clear  solution  with  ether. — 
Pharm  Ztg.,  April  19,  1879,  p.  243. 
Preparation  of  Chemically  Pure  Tartaric  Acid. — Oscar  Ficinus 
suggests  tartrate  of  zinc,  a  not  very  soluble  salt,  which  is  entirely 
decomposed  by  sulphuretted  hydrogen,  as  a  suitable  material  for  mak- 
ing chemically  pure  tartaric  acid,  claiming  that  the  sulphide  of  zinc^ 
