52 
Reviews. 
f  Am.  Jour.  Pharm. 
\       Jan.,  1891. 
further  increase  the  usefulness  of  that  force.  The  motors  now  in  use  in  the 
United  States  were  estimated  at  not  less  than  20,000  horse-powers,  besides 
about  175,000  horse-powers  on  electric  railways  running  over  2,000  miles  of 
track.  In  producing^  the  electric  light  at  the  present  time,  it  was  stated  that 
much  of  the  energy  was  wasted  through  the  production  of  heat  ;  but  the  elec- 
tric light  of  the  future  would  be  similar  to  that  of  the  glow-worm  and  fire-fly, 
where  all  the  energy  was  used  in  producing  light  without  heat.  The  concen- 
tration of  energy  would  be  reached,  when  it  became  possible  to  produce  elec- 
tricity directly  from  the  burning  of  coal,  which  would  render  useless  the 
steam-engine  of  to-day.  The  application  of  electricity  as  a  therapeutic  agent, 
for  aerial  navigation  and  many  other  purposes  was  also  alluded  to. 
After  the  conclusion  of  the  lecture,  Professor  Sadtler  showed  the  materials 
from  which  the  different  kinds  of  electric  lamps  are  made,  and  illustrated 
experimentally  the  principles  governing  incandescent  and  arc  lighting,  and  of 
some  electric  phenomena. 
A  microscopic  exhibition  had  been  arranged  in  the  library  by  the  instructor 
in  microscopy,  A.  P.  Brown,  Ph.G.,  who  showed  many  objects  interesting  to 
the  pharmacist  and  of  general  interest. 
A  collation  was  served  in  the  museum,  where  an  orchestra  was  stationed, 
and  contributed  much  to  the  pleasure  of  the  evening.  The  entertainment  was 
evidently  enjoyed  by  all  present,  many  expressing  the  wish  that  such  social 
gatherings  would  take  place  more  frequently  in  the  future  than  has  been  the 
case  in  the  past. 
REVIEWS  AND  BIBLIOGRAPHICAL  NOTICES. 
The  Medical  Bulletin  Visiting  List,  or  Physician's  Call  Record.  New  edi- 
tion. Philadelphia  and  London  :  F.  A.  Davis.  1891.  Price,  $1.25  (70 
patients);  $1.50  (105  patients). 
This  visiting  list  is  stated  to  be  arranged  upon  an  original  and  convenient 
monthly  and  weekly  plan  for  the  daily  recording  of  professional  visits.  The 
plan  is  quite  simple,  and  is  easily  understood  ;  the  make-up  of  the  pages  is 
such  as  to  facilitate  the  correct  keeping  and  the  examination  of  the  profes- 
sional records.  Various  tables,  formulas  and  other  information  for  convenient 
reference  are  printed  upon  the  first  24  pages. 
A  Laboratory  Manual  of  Chemistry,  medical  and  pharmaceutical,  contain- 
ing experiments  and  practical  lessons  in  inorganic  s}mthetical  work  ;  formulas 
for  over  three  hundred  preparations,  with  explanatory  notes ;  examples  in 
quantitative  determinations  and  the  valuation  of  drugs,  and  short  systematic 
courses  in  qualitative  analysis  and  in  the  examination  of  urine.  By  Oscar 
Oldberg,  Ph.D.,  etc.,  and  John  H.  Long,  Sc.D.,  etc.  With  original  illustrations. 
Second  edition,  revised  and  enlarged.  Chicago  :  W.  T.  Keener.  1891.  8vo. 
pp.  475.    Price,  $3.50. 
On  the  first  appearance  of  this  work,  about  three  years  ago,  we  have  given 
an  extended  account  of  its  scope  and  arrangement,  showing  that  it  is  a  guide 
to  practical  work  in  the  laboratory,  the  authors  being  directors  of  the  pharma- 
ceutical and  chemical  laboratories  in  the  Northwestern  University.  In  notic- 
ing the  present  edition,  we  observe  that  the  chapter  on  the  analysis  of  urine 
