of  international  economics,  it  is  one  of  the  important  subjects
connected  with  all  economic  discussion.  As  Professor  Gide
says: —  "There  is  no  subject  in  political  economy,  hardly,  per-
haps, in  any  sphere,  which  has  stirred  up  more  controversies,
caused  the  writing  of  more  volumes,  nay,  even  occasioned  the
firing  of  more  cannon  balls."

The  Evolution  of  Commerce. — The  steps  in  the  develop-
ment of  commerce,  have  been  stated  from  time  to  time  during
the  progress  of  the  work.  The  chapter  entitled  "  The  Trader,"
contains  in  particular,  an  outline  of  the  growth  of  commerce.
