AmAuJ.?Sfrm'}       Abstracts  from  Italian  Journals.  377 
In  conclusion,  I  will  state  that  the  only  point  I  aimed  to  make 
was,  that  the  acid,  which  I  isolated  from  smart-weed,  was  neither 
tannic  nor  gallic  acid.  This  I  have  succeeded  in  doing  satisfactorily 
to  my  mind;  the  doubts  of  Messrs.  Trimble  and  Schuchard  to  the 
coutrary,  notwithstanding;  and  with  this  I  dismiss  the  subject. 
Louisville,  July  12,  1886. 
Note  by  the  Editor. — The  explanations  on  the  two  analyses  thus  far  made 
have  been  so  ample,  that  further  discussion  will  be  of  no  avail  for  the  present. 
The  plant  in  q  testion  is  so  widely  distributed,  both  in  North  America  and 
Europe,  that  it  will  doubtless  be  investigated  also  by  others. 
ABSTRACTS  FKOM  ITALIAN  JOURNALS. 
By  Jos.  W.  England,  Ph.G. 
Glucose  Test. — Fisher,  Jaksch  and  Grocco  observe,  in  the  Annali 
di  Chim.  Med.-Farm.,  Apr.  1885,  p.  307,  that  a  mixture  of  1  part 
glucose,  2  parts  phenylaniine,  3  parts  sodium  acetate,  forms  fine  yellow 
crystals  of  a  substance  termed  phenyl-glucose-amine,  according  to  the 
following  reaction : 
C6H12Oe+2  NH3C6H5=C18H22N204+2  H20+H2. 
In  a  very  dilute  solution  of  glucose,  in  order  to  recognize  the  yel- 
low crystals,  it  is  necessary  to  use  the  microscope.  Jaksch  and  Grocco 
have  applied  the  test  clinically.  A  process  much  practiced  is  the 
following:  Mix,  in  a  capsule,  1  part  phenylamine,  1.5  parts  sodium 
acetate  and  20  parts  of  urine,  heat  for  twenty  minutes  upon  a  salt 
bath.  Cool  and  stand  for  a  half  hour  and  examine  the  precipitate 
under  the  microscope.  If  the  urine  contains  glucose,  groups  of 
needle-shaped  crystals  will  be  obtained.  This  method,  it  is  claimed, 
will  distinguish  as  low  as  0*1  gm.  or  less  in  1  liter  of  urine. 
Solubilities  of  Lithium  Carbonate. — Bevade  (Bull,  Soc.  Chim.,  xliii, 
p.  123,,  Annali  di  Chim.  Med.-Farm.,  1885,  p.  313)  gives  his  experi- 
ence, relative  to  the  solubility  of  lithium  carbonate  in  100  parts  of 
water,  as  follows: 
0°  C  1-539  parts. 
10°  "  1-406  " 
20°  "  1-329  " 
50°  «  1-181  « 
75°"  0-866  " 
100°  "  0-728  " 
