Next to the adjectives which form the numerous sub-classes of good and evil, those which mark degrees are of the most extensive application, and in the operation of sub-marking save the greatest number of names. Thus the terms, great, and little, are applicable to a great proportion of the marks of complex ideas of both formations. We say a great tree, a little tree; a great man, a little man; a great crime, a small crime; great blame, little blame; great honour, little honour; great value, little value; great weight, little weight; great strength, little strength, and so on. Different adjectives differ in the number of classes to the subdivision of which they are subservient. Thus hot and cold are only applicable where diversities of temperature are included; round, square, and {149} so on, where figure is included; white or black, where colour; and so on. Beside the use of adjectives, in dividing great classes into smaller ones, without multiplication of names; they sometimes answer another purpose. It often happens that, in the cluster of sensations or ideas which have one name; we have occasion to call attention particularly to some one ingredient of the cluster. Adjectives render this service, as well as that of marking a class. This rose, I say, is red; that rose is yellow: this stone is hot, that stone is cold. The term, red rose, or yellow rose, is the name of a class. But when I say, this rose is red, where an individual is named, I mark emphatically the specific difference; namely, red, or yellow; which constitutes that subdivision of the genus rose, to which the individual belongs.[45] [Editor's footnote 45: In the concluding paragraph we find the first recognition by the author that class names serve any purpose, or are introduced for any reason, except to save multiplication of names. Adjectives, it is here said, answer also the purpose of calling attention to some one ingredient of the cluster of sensations combined under one name. That is to say, they enable us to affirm that the cluster contains that ingredient: for they do not merely call attention to the ingredient, or remind the hearer of it: the hearer, very often, did not know that the cluster contained the ingredient, until he was apprised by the proposition.