Alo'ctoblr^9oaLm'  1"    American  Pharmaceutical  Association.  499 
form  iodoform  at  the  ordinary  temperature.  The  writer,  however, 
has  found  that  this  observation  is  incorrect,  this  being  brought  to 
his  attention  while  examining  a  sample  of  grain  alcohol,  concerning 
which  there  was  some  doubt  relative  to  its  purity.  On  applying  the 
usual  iodoform  reaction  it  is  found  to  indicate  the  presence  of  some 
iodoform  producing  substance ;  but  subsequent  examinations  fail 
to  prove  that  there  was  anything  present  excepting  ethyl  alcohol, 
The  same  reaction  was  then  applied  to  ordinary  grain  alcohol,  and 
to  absolute  alcohol,  and  the  same  reaction  was  developed  with  both. 
In  fact,  the  ethyl  alcohol  can  be  completely  precipitated  as  iodoform 
at  the  ordinary  temperature,  the  precipitation,  however,  is  slow,  and 
especially  so  in  cooler  weather. 
The  Chemical  Composition  of  Calcium  Lacto-Phosphate. 
By  Lyman  F.  Kebler. 
Very  little  information  exists  in  literature  relative  to  this  product. 
It  is  described  as  a  white,  hard,  shiny,  scaly  crystal,  yet  we  are 
sure  that  no  one  ever  saw  this  article  commercially  in  the  above 
form.  It  is  generally  supposed  to  consist  of  calcium  lactate,  lactic 
acid  and  calcium  phosphate ;  an  excess  of  lactic  acid  being  always 
present  to  render  the  product  soluble.  According  to  the  writer's 
experience  the  presence  of  the  lactic  acid  does  not  account  for  the 
solubility  of  the  calcium  lacto-phosphate.  The  reason  why  calcium 
lacto-phosphate  is  soluble,  is  because  that  it  is  composed  almost 
entirely  of  soluble  products — namely,  calcium  lactate,  calcium  acid 
phosphate,  lactic  acid  and  a  small  amount  of  normal  calcium  phos- 
phate. The  latter  is  probably  rendered  soluble  by  the  presence  of 
the  calcium  acid  phosphate  and  a  small  quantity  of  lactic  acid. 
The  analytical  results  are  tabulated  and  the  methods  employed  for 
determining  the  same  are  included  in  the  paper. 
Cinnamon  Oils  and  Cinnamic  Aldehyde. 
By  Geo.  R.  Pancoast  and  Lyman  F.  Kebler. 
The  authors  collected  the  various  kinds  of  cinnamon  oils  in  the 
market  and  examined  them  as  to  purity  as  well  as  estimated  the 
per  cent,  of  cinnamic  aldehyde.  From  the  results  obtained,  the 
authors  concluded  that  the  various  kinds  of  oils  examined  complied 
very  closely  with  the  quality  for  which  they  were  sold,  and  they 
are  of  the  opinion  that  this  has  largely  been  brought  about  by  the 
