362 Dr. Whewell’s Inaugural Lecture . 
time. For it might be said, You have only to determine accord- 
ing to what resemblances and what differences you will make 
your classes, and then to go through the work, sticking to these. 
But any one who has attended a little more to the science of 
art and industry, in the attempts which were made to perform 
that task on the occasions of the French Expositions in 1806, 
in 1819, in 1827, in 1834, and in 1844. On the first occasion 
the distribution adopted was entirely geographical ; on the sec- 
ond, it was what was called an entirely material or natural, sys- 
tem, dividing the arts. into thirty-nine heads, the consequence of 
which is said to have been great confusion: In 1827, a purely 
scientific arrangement was attempted, into five great divisions, 
