'^"'slprisso""'  }  Gleanings  from  the  German  Journals,  471 
fine  powder  with  precipitated  chalk  in  the  proportion  of  i  to  6. — Pharrn. 
Ztschr.  /.  Russl.^  March  i,  1880,  p.  146,  from  Berl.  Klin. 
W ichenschr. 
Insect  Powder,  colored  yellow  with   chrome   yellow,  was 
noticed  by  Dr.  C.  Grote,  whose  simple  method  of  detecting  the  chrome 
yellow  consists  in  igniting  as  much  of  the  powder  as  can  be  put  on  the 
point  of  a  knife  with  saltpetre,  when  a  yellow  fused  mass  is  obtained, 
which,  being  dissolved  in  water  and  filtered,  yields  in  the  filtrate  and 
residue  reactions  respectively  of  chromic  acid  and  lead.  The  fraudu- 
lent addition  was  probably  not  only  made  in  order  to  impart  a  brighter 
yellow  color  to  the  pure  insect  powder,  but  in  order  to  prevent  the 
detection  of  other  probably  not  yellow  inert  additions. — Pharm.  Ztg.,, 
April  7,  1880,  p.  208. 
Concentrated  Tincture  of  Insect  Powder  (Tinctura  pyrethri 
florum  concentrata),  is  highly  recommended  as  an  insecticide  by 
Pinzelberg,  who  prepares  the  tincture  in  the  proportion  of  i  part 
Persian  insect  powder  to  10  parts  absolute  alcohol,  and  claims  that  in 
order  to  prove  efficient,  it  is  necessary  to  scatter  it  by  means  of  a 
perfume  atomizer.  When  thus  used  in  a  closed  room  all  flies  soon 
drop  dead,  while  scattering  it  over  linen,  etc.,  acts  as  a  protection 
against  fleas,  etc. — Pharm.  Centralh.^  April  i,  1880,  p.  118. 
Grimault's  Indian  Hemp  Cigarettes  are  highly  recommended 
for  asthma,  other  affections  of  the  breathing  organs  and  various  other 
diseases,  consist  almost  altogether,  as  the  French  manufacturer  claims, 
of  Indian  hemp  and  a  little  saltpetre,  and  are  far  superior  to  the  ordi- 
nary remedies,  which  consist  of  the  leaves  of  belladonna,  of  nicotina, 
or  of  paper — all  impregnated  with  saltpetre,  opium,  or  even  arsenic. 
An  analysis,  made  by  Dr.  H.  Braun,  proved,  however,  that  Grimault's 
cigarettes  consist  chiefly,  in  contradiction  to  the  manufacturer's  state- 
ments, of  belladonna  leaves,  contaminated  (we  might  almost  say)  with 
a  few  fragments  of  cannabis,  and  of  two  other  species  of  leaves,  one 
of  which  greatly  resembles  the  leaves  of  epilobium. — Ztschr.  d.  Allg, 
Oest.  Apoth.  Ver.^  April  10,  1880,  p.  168. 
The  Various  Colors  of  the  Shells  of  Bird's  Eggs  are  products 
of  two  coloring  substances,  which  Wicke  considers  identical  with 
hilwirdln  and  hil'irubrin.  The  coloring  matter  consists  in  the  outer 
layer  of  the  shells,  and  separates  in  flakes  when  the  egg-shells  are 
moistened  with  hydrochloric  acid.  Alcohol  dissolves  these  flakes, 
yielding  various  colored  solutions:  A  sky-blue  solution  (with  shells  of 
