178 Barnard’s Report on the Machinery 
wedded and indissoluble partners, Theory and Practice. An 
ll the 
? 
dependence of art upon other art, and of art upon its own 
time but with intensified vividness, how d eply ‘art and inven- 
tion project their influences into economic an 
a : rae 
The dependencies of industrial art may be spoken of in 
Various senses,—massively, for instance, as restin upon force, its 
ity, as used for the purpose of ction, 
ugh all the range and Metmeies of heat, cold, ex- 
nD, pressure and motion,—sometimes the production of 
red material, and sometimes the production of impro 
