The  comparative  freight  charges  on  100,000  tons  of  goods  (column  20)
Wtbe  veisels  A,  A,,  A^  respectively  would  be  £100,000,  £104,000  and

^08,  io  a  merely  mechanical  point  of  view,  and  irrespectively  of  various
■^tutile  and  nautical  considerations  which  may  limit  the  size  of  ships,  we
^tbe  benefit  of  performing  goods  transport  service  by  large  vessels  in  pre-
^ifcooe  to  small  ones,  provided  that  adequate  cargo  be  always  obtained  and
^  DO  delay  be  thereby  incurred*  But  it  is  to  be  observed  that  if  the
^toQs  ghip  A,  instead  of  being  loaded  with  its  full  cargo  of  2395  tons,
^ioided  only  with  the  quantity  of  cargo  (1878  tons)  that  could  be  carried
7  tfae  4000-tons  ship.  A,,  the  freight  expenses  per  ton  of  cargo  would,  in
^  case,  be  enhanced  in  the  proportion  of  63  to  49,  that  is,  in  the  proportion
^128  to  100,  or  28  per  cent,  or,  expressed  in  money,  in  the  proportion  of
^-  lOd.  to  £1,  the  same  being  a  higher  rate  by  24  per  cent,  than  the
^t  charge  at  which  the  4000-tons  ship,  A^,  would  perform  the  service.
^Jponning  the  calculations  from  the  data  adduced  by  the  table,  it  will  be
^  that  the  economic  advantage  of  the  5000-tons  ship,  A,  as  compared
*^  tbe  4000-tons  ship,  A  j,  will  be  entirely  sacrificed  if  its  cargo  be  reduced
^  2395  tons  to  2305  tons,  or  be  only  90  tons,  or  3|  per  cent  deficient
j  iU  faU  load.  Also,  as  compared  with  the  ship  A,,  of  3000  tons,  the
|||*«atage  of  the  5000-tons  ship  A  will  be  lost  if  its  cargo  be  reduced  from
^^  tons  to  2218,  or  be  only  1 17  tons  deficient  of  its  full  load.
