394  Laboratory  Notes,  mSaSt^mT' 
which  vary  greatly  in  specific  gravity  from  the  original  product 
mentioned  above. 
Sp.  Gr.  at  20°  C. 
Creolin  Pearson  1*0422 
Creolin. — (1)  1*0755 
(2)  1*0752  . 
(3)  i-o758 
(4)  i'o748 
(5)   •  •  i'0732 
(6)  .  .  1-0768- 
(7)  .......  :   1-0769 
(8)   1*0780 
(9)  1.  1-0669 
(10)    .   .  .   1*0675  : 
(11)  1-0676 
.  (12)  1-0651 
(13)  1-0623 
(14)  •   •   I  "0643 
(15)  <  1-0640 
(16)  '.  I -0734 
(17)    .....  1-0724 
(18)  1*0691 
(19)  \  1*0702 
(20)  1-0692 
(21)  1*0676 
The  range  being  from  1*0623  to  1*0780,  which  is  noticeably 
higher  than  the  original  article.    Average,  1*0711. 
Gamboge. — A  lot,  aggregating  35,000  pounds,  was  examined  re- 
cently, which  fully  complied  with  the  U.S.P.  requirements  for  ab- 
sence of  starch. 
Belladonna  Leaves. — Ten  samples  of  belladonna  leaves,  for  which 
the  commercial  standard  of  0*40  per  cent,  alkaloid  has  been  estab- 
lished, gave  figures  as  follows: 
Alkaloid  Moist  by  Moisture.  Alkaloid  Dry. 
Acid  Titration. 
Per  Cent.  Per  Cent.  Per  Cent. 
(1)  0*343  7*74  0*372 
(2)   .  0*310  9-06  0*343 
(3)  •  •  0*370  8*i8  0*404 
(4)  0*375  7*65  0-407 
(5)  •  •  0*260  9-54  0*289 
(6)  0-430  6*62  0*460 
(7)  0*371  8*8o  0*407 
(8)  0*264  9*20  0*291 
(9)   0*220  8*67  0*241 
(10)  0*313  7*75  0*340 
Average  0*3227  8*32  0*3525 
