44 
Revieivs. 
f  Am.  Jour.  Pharm, 
I    January,  1901. 
(2)  Special  Discussion  of  the  Senses  with  Reference  to  the  Ex- 
amination of  Vegetable  Drugs. 
(3)  Causes  Modifying  the  Characteristics  of  Drugs. 
(4)  The  Histology  of  Vegetable  Drugs. 
The  book  will  no  doubt  prove  of  value  to  students  who  are 
engaged  in  a  study  of  vegetable  drugs. 
A  Text-Book  of  Chemistry.  By  Samuel  P.  Sadtler  and  Virgil 
Coblentz.  Being  the  third  revised  and  enlarged  edition  of  Sadtler 
and  Trimble's  Chemistry.  In  two  volumes.  Philadelphia:  J.  B. 
Lippincott  Company. 
The  appearance  of  another  revised  and  enlarged  edition  of  this 
well-known  chemistry  in  two  years  speaks  for  the  value  of  this 
book.  The  new  edition  is  characterized  by  an  enlargement  of  the 
part  dealing  in  elementary  physics,  electrolysis  and  electro-metal- 
lurgy and  the  periodic  system.  In  the  chapters  on  physics  over 
fifty  new  illustrations  alone  have  been  added.  In  thus  developing 
the  part  on  elementary  physics,  the  authors  have  shown  excellent 
judgment.  The  student  in  pharmacy  and  the  applied  sciences  can- 
not have  too  much  of  the  fundamental  training  in  physics — indeed, 
a  physical  laboratory  is  to-day  almost  to  be  considered  essential  to 
the  proper  understanding  of  natural  phenomena  and  the  application 
of  such  knowledge  in  the  construction  of  apparatus  for  use  in  the 
arts  and  sciences.  No  man  can  be  a  successful  manufacturer  who 
is  not  familiar,  both  theoretically  and  practically,  with  the  general 
and  special  properties  of  matter  and  energy,  and  who  is  not  well  ac- 
quainted with  the  nature  and  application  of  heat,  light  and  electricity. 
Probably  the  most  fertile  of  all  the  departments  of  physics  is  that 
relating  to  electricity.  The  applications  of  electricity  are  seen  on 
every  hand.  In  chemistry  it  is  applied  to  electro-chemical  analysis, 
electrotyping,  electroplating,  electric  refining  of  metals,  electrolysis 
of  alkali  chloride,  electrolytic  preparation  of  hypochlorites,  chlor- 
ates, caustic  alkalies,  metallic  arsenic  and  antimony,  ozone,  white 
lead,  the  carbides,  phosphorus,  iodoform,  chloral,  chloroform,  nitro- 
compounds, saccharine,  organic  colors,  etc.  The  present  edition 
contains  a  concise  treatment  of  the  processes  involved  in  the  above- 
enumerated  applications. 
The  new  edition,  which  has  been  enlarged  and  thoroughly  re- 
vised, contains  all  of  the  valuable  features  of  the  earlier  editions, 
