442 
GLYCEROLE  OF  LEAP. 
purity  of  some  liquids,  and  the  standard  strength  of  some  phar- 
maceutical preparations  than  the  specific  gravity  can  do ;  it  is 
therefore  to  be  recommended  to  make  investigations  with  great 
accuracy,  keeping  in  view  the  nature  of  the  vessel,  the  tem- 
perature, the  rapidity  of  dropping,  and  other  circumstances  cal- 
culated to  affect  the  weight.  The  following  are  the  medium 
results  of  the  author's  investigations,  the  figures  in  parenthesis 
denoting  either  the  specific  gravity,  or  the  proportion  of  the 
articles  contained  in  the  liquids.  1  Swiss  drachm=  3.9062 
grammes,  gave  drops  of 
Acetum  plumbi  (1.33)   42 
Acidum  aceticum   50 
"       hydrocyan.  spirit  126 
u       muriat.  cone.  (1.15)..   48 
"  "      dilut.   (1.018)   46 
u       sulphur,  cone,  angl  100 
"  "       dilut.  (1:6)   70 
.Ether    204 
"      aceticus  135 
Alcohol  sulphuris  104 
Amylen  160 
Aqua  destillata   52 
Bals.  Copaivae  105 
"    Peruvianum   65 
Chloroform  126 
Elix.  Acidum  Halleri  (1:1)  100 
Kreosot  100 
Liq.  Ammonias  caust   63 
"    Zinci  muriat.  (1:1)   47 
Mixt.  sulph.  acida  (1:3)  124 
Mucilago  Gi.  arabici  (1:3)   42 
Oleum  Amygdal.  seth..   80 
«  "         dulc   89 
"     Anisi  113 
«      Carvi  118 
"      Caryophyl   108 
"      Chamom.  aeth  146 
"     Croton  Tigl  204 
"     Fceniculi  100 
"     Menthse  pip  126 
"     Rosse  142 
"     Terebinth  105 
Petroleum  130 
Solutio  Argenti  nitr.  (1:5)   64 
"       Arsenic.  Fowl   67 
Camphorae  alcoh.  (1:2)  140 
«       Extr.  Bellad.  (1:2)  126 
"  "    Hyoscyami  (1:2)  126 
"       Lactucarii  Gallici  (1:2)   84 
"       Morphiae  acetat.  (1:7)    48 
"       Plumbi  acetat.  (1:5)   27 
"       Potassae  carbonat.  (1:2).....  36 
"  "       nitratis  (1:5)   45 
"       Potassii  iodidi  (1:1)   78 
"       Sodas  carbonat.(l:3)   34 
"  "     nitratis  (1:2)   89 
Spiritus  aethereus  152 
"       camphoratus  ..120 
"       muriatico-aether  150 
"       nitrico-aether  — 150 
"       vini30°Beck  152 
"         "    20°    "     ..  141 
Syrupus  simplex   42 
Tinctura  Aloes  (1:6)  124 
1£       Castorei  spirit  ....120 
Cincbon.  comp  136 
"       Ferri  pomati   89 
<«       Iodinii  (1:11)  158 
"       Opii  crocata   82 
"  "    simplex  134 
"       Rhei  vinosa   76 
"       Valerianae  aether  158 
Vinum  Antimonii   71 
—(Sohweizer.  Zeitschr.f.  Pharm.  1858,  97-100.)         J.  M.  M. 
GLYCEROLE  OF  LEAD. 
By  Charles  Tiltard. 
The  following  is  suggested  as  a  substitute  for  Goulard's  Cerate. 
This  cerate,  as  is  well  known,  becomes  speedily  rancid,  and  in 
