(CMtorial  £3  cp  ailment. 
Universal  Exhibition  of  1855,  at  Paris. — Through  the  politeness  of  Dr. 
Alfred  L.  Kennedy,  Chairman  of  the  Pennsylvania  Commission  to  the  Paris 
Exhibition,  we  have  received  a  pamphlet  of  78  pages,  issued  by  the  Imperial 
French  Commissioners,  which  embraces  a  "  system  of  classification  "  to 
serve  as  a  basis  for  the  arrangement  of  the  products  exhibited,  and  the  rules 
which  will  be  observed  in  grouping  objects  in  the  exhibition. 
The  whole  exhibition  will  be  classed  in  two  divisions,  viz  :  I.  Industrial 
Products.  II.  Works  of  Art.  The  products  of  industry  are  arranged  in 
seven  groups,  viz  :  1st  group.  Those  having  for  their  principal  object  the 
production  or  extraction  of  raw  materials,  as  mining,  lumbering,  fisheries, 
agriculture,  and  the  breeding  of  animals.  2d  group.  Industry,  having  for 
its  special  object  the  use  of  mechanical  forces.  3d  group.  Those  specially 
based  on  the  employment  of  physical  and  chemical  agents,  relating  to  the 
sciences  and  instruction.  4th  group.  Those  which  relate  to  the  learned 
professions,  including  hygiene,  pharmacy,  the  military  art,  etc.  5th  group. 
Manufactures  of  mineral  products,  such  as  jewelry,  bronzes,  glass  ware, 
porcelain,  enamel,  etc.  6th  group.  Manufactures  of  tissues,  cotton,  linen, 
silk  and  straw  manufactures.  7th  group.  Furniture  and  decoration,  in 
fashions,  manufacturers'  designs,  printing,  and  musical  instruments. 
The  second  division  constitutes  the  8th  group,  under  the  title  of  "  the  fine 
arts,"  and  includes  painting,  engraving,  lithography,  sculpture,  medal  en- 
graving, and  architecture. 
Chemicals  are  placed  in  the  3d  group,  10th  class,  1st  section,  and  are 
arranged  under  the  following  heads,  viz  : 
1.  Apparatus  and  general  processes  of  making  chemical  products. 
2.  Manufactured  products  principally  derived  from  mineral  substances. 
3.  Manufactured  products  chiefly  derived  from  vegetable  substances. 
4.  Manufactured  products  mainly  derived  from  animal  substances. 
5.  Various  chemical  products,  made  or  purified  chiefly  for  the  sciences. 
Pharmaceuticals  are  placed  in  the  3d  group,  12th  class,  and  4th  section, 
and  arranged  under  the  following  heads,  viz: 
1.  Pharmaceutical  processes  in  general. 
2.  Articles  of  the  materia  medica  in  their  natural  condition. 
3.  Simple  medicines,  fixed  and  volatile  oils,  powders,  &c. 
4.  Compound  medicines  ;  tinctures,  pills,  syrups,  etc. 
5.  Accessories,  surgical  dressings,  leeches,  etc. 
