70 
Book  Reviews. 
J  Am.  Jour.  Pharm. 
1     January,  1921. 
cellaneous  explosives  and  propellants.  The  first  group,  coal  mine 
explosives,  is  sub-divided  according  to  the  country  producing  them. 
The  numbers  listed  under  the  names  of  the  different  countries  give 
a  good  idea  of  the  prominence  which  the  author  naturally  extends 
to  British  explosives  throughout  the  book.  These  numbers  follows : 
American,  32 ;  Austrian  and  Hungarian,  4 ;  Belgian,  22 ;  French,  5 ; 
German  47  and  British  99.  In  the  list  of  propellants  only  four  out 
of  the  sixty-six  mentioned  are  of  American  make. 
Following  the  dictionary  proper  there  is  an  "index"  of  explo- 
sive ingredients  which  lists  under  the  name  of  each  ingredient,  the 
names  of  the  explosives,  in  this  book,  containing  it.  This  index  is 
of  value  in  showing  the  extent  of  the  use  of  each  ingredient. 
In  spite  of  its  incompleteness  as  regards  American  and  Ger- 
man explosives,  Marshall's  Dictionary  will  be  of  considerable  in- 
terest and  value  to  manufacturers  of  and  dealers  in  explosives,  as 
it  includes  many  of  the  new  explosives  which  have  proved  a  com- 
mercial success. 
Charles  E.  Vanderkleed. 
"Laboratory  Experiments  in  Organic  Chemistry."  By  E.  P. 
Cook,  A.  M.,  Associate  Professor  in  Smith  College.  2d  Ed., 
79  pages,  8  illustrations.  $1.00  net.  P.  Blakiston's  Son  &  Com- 
pany Philadelphia,  Pa. 
This  book  is  designed  especially  for  use  with  Stoddard's  "In- 
troduction to  Organic  Chemistry.  The  experiments  are  those  proven 
most  suitable  for  a  first  course  in  organic  chemistry  and  illustrate 
and  emphasize  the  more  important  class  reactions,  both  as  to  the 
manufacture  and  testing  of  members  of  the  several  classes  of 
organic  compounds. 
Only  experiments  that  will  "work"  are  claimed  to  be  given. 
Equations  have  been  omitted,  it  being  considered  best  to  allow  the 
student  to  work  them  out  for  himself  with  the  aid  of  his  text-book. 
Reference  is  made  to  seven  other  books  for  details  of  some  opera- 
tions. The  procedure  outlined  for  the  conduct  of  the  experiments 
is  concise  and  generally  easily  followed.  Interspersed  with  the 
explanations  are  numerous  questions  designed  to  draw  from  the 
student  what  he  is  doing  and  seeing,  and  thus  impress  indelibly  on 
his  mind  the  salient  facts  and  significance  of  his  work. 
F.  P.  Stroup. 
