468 
British  Pharmaceutical  Conference. 
( Am.  Jour.  Pharm. 
I  September,  1898. 
Substance  Experimented  On. 
Quantity  Used. 
No.  of  C.c.  of  COo 
evolved  at  N.  T.  and"  P. 
•15  gramme 
•15  gramme 
41*6  C.c. 
41-8 
2. 
Ingredients  of  P.B.  efif.  citrotartrate  im-1 
"3  gramme 
(46  p. c.  NaHCOs) 
39*24  C.c,  slight  loss. 
3 
Ditto  dried  below  540  C  ,  not  granulated 
•3  gramme 
33  C.c.  =  21  p.  c.  loss  gas. 
P.B  process  carried  through  .  . 
•3  gramme 
27  C.c.  =  32  p.  c.  loss  gas. 
5 
Good  commercial  sample  by  well-known  "1 
•3  gramme 
268" 
6. 
•3  gramme 
21-8. 
7- 
P.B.  Mag.  Sulph.  Eff  
(    3  gramme  ~) 
<  (contains  only  > 
I  36  p.  c.  soda)  J 
15  C.c. 
8. 
Sample  of  Mag.  Cit  ,  commercial    .  .  . 
•3  gramme 
15  C.c. 
No.  2  shows  a  slight  loss,  the  powder  being  very  damp. 
No.  3  shows  nearly  as  much  loss  as  in  the  final  operations. 
No.  4,  32  per  cent,  loss  ;  this  agrees  with  the  loss  in  weight  mentioned  before. 
No.  6,  a  comparatively  old  sample. 
No.  7,  this  preparation  contains  only  36  per  cent,  of  soda,  against  50  per  cent,  of  No.  6 ; 
the  relative  yield  is  therefore  the  same. 
No.  8  contains  about  33  per  cent,  sodium  bicarbonate  ;  result  fair. 
NOTE  ON  THE  MYDRIATIC  ALKALOIDS. 
By  H.  A.  D.  Jowett. 
The  descriptions  and  tests  of  mydriatic  al  kaloids  given  in  the  new  Pharma- 
copeia are  considered  by  H.  A.  D.  Jowett  to  be  generally  unsatisfactory,  and, 
in  some  cases,  misleading  and  inaccurate.  In  the  case  of  atropine  and  its  salts, 
he  thinks  the  insertion  of  the  color  test  with  fuming  nitric  acid  and  potash  is 
quite  unnecessary,  and  he  suggests  that  to  ensure  pure  products,  such  as  might 
reasonably  be  expected  from  manufacturers,  reference  should  be  made  to  the 
melting  point,  formation  and  melting  point  of  the  aurichloride,  optical  inac- 
tivity, and  freedom  from  ash  on  ignition.  It  is  suggested  that  the  melting 
point  of  hyoscyamine  should  not  be  lower  than  2000,  that  scopolamine  or  hyo- 
scine  hydrobromide  should  have  its  solubility  given  as  1  in  4  rather  than  1  in  1, 
and  that  the  melting  point  given  for  the  dehydrated  salt  should  also  be  modi- 
fied. 
A  NEW  CONSTITUENT  OF  LEMON  OIL. 
By  J.  C.  Umney  and  B.  S.  Swinton. 
In  examining  lemon  oil  the  authors  have  separated  an  ester  of  geraniol,  and 
they  consider  that  the  presence  of  this  compound  has  an  important  bearing 
upon  the  odor  and  taste  of  lemon  oil,  and  that  a  concentrated  lemon  oil  must 
contain  the  ester  in  normal  proportions,  in  addition  to  citral  and  citronellal, 
before  it  can  be  said  to  represent  in  a  concentrated  form  the  true  odor  and  taste 
of  the  natural  oil. 
ALBUMINS  AND  SOME  TYPES  OF  PROTEID  DIGESTION. 
By  Gordon  Sharp. 
As  the  result  of  an  examination  of  hard  boiled  egg-albnmin  and  dried  serum- 
albumin,  the  author  arrives  at  the  conclusion  that  peptone  is  absent  from  both. 
