364 Dr. Whewell’s Inaugural Lecture 
as A, all spun and woven fabrics ; B, manufactures of metals ; 
C, manufactures of minerals and mining ‘machinery, and the 
like. 
And, again, each of these sub-classes was separated into heads, 
by numbers. Thus, the sub-class cereals and the like, are 1, the 
common cereals ; 2, the less common ; 3, millet; 4, pulse and 
cattle-food ; 5, grasses and roots; 6, flours (ground grain); 7, 
oil seeds ; 8, hops. And the sub-class A, of manufacturing ma- 
chines and tools, included the heads, 1, machinery for spinning 
and weaving cotton, wool, flaz, hemp, silk,—for working caoutch- 
ouc, Gulla percha, hair ; 2, paper-making ; 3, printing. Aud 
to shew how much practical experience governed these sub- 
divisions, I may mention that great aid in this task was found in 
the Trades’ Directories of Birmingham and Manchester, and other 
great manufacturing towns. 
I have followed this classification’ into the ultimate ramifica- 
tion of the Catalogue, at the risk of being, I fear, tedious for a 
moment; partly because | wish to make a reflection upon it; and 
partly, also, that you may see what a vast work is performed if 
this classification be really coherent and sound. Fr, first, turn 
your attention to the one head which I have mentioned ; this 
Single “head includes no less than this,—all machinery for the 
complete formation, from the raw material, of all fabrics of cot- 
ton, wool, flax, hemp, silk, caoutchouc, gutta percha, and hair. 
This is head 1 of sub-class A. Under this head, or under the 
first particular head, cotton, are ver many articles in the great 
exhibition. Besides this particular head,-and the other particular 
heads, wool, flax, caoutchouc, §c., inclided in the general head 1, 
there are two other heads in this sub-class, each of like extent. 
Along with this sub-class A, are also sub-classes B, C, D, E, F; 
each of an extent not inferior to A; and thus, this Class VI, contains 
& great mass of heads, each inclnding a vast number of articles. 
Yet in the Catalogue, this Class VI, is one of the smallest extent 
machines, with manufactured goods and scniptured forms, have 
really been put in a shape in which it will permanently retain 
traces of the ordering hand. 
What the value and advantage would be of a permanent and 
generally accepted classification of all the materials, instruments, 
and productions of human art and industry, you will none of you 
