_Extension of the Process to other Objects._--It is of the form, color, etc., of some particular flower, as yet, however, and not of form and color in general, that I conceive. Suppose, now, that other flowers are presented to my notice, possessing the same form and color, for example, red. Presently I observe other objects, besides flowers, that are of the same color--horses, cows, tables, books, cloths. As the field of observation enlarges, still other objects are added to the list, until that which I first conceived of as the peculiar property of a single flower, the rose, and of a single specimen, no longer is appropriated in my thoughts to any individual object or class of objects, but becomes a general conception. It is an abstraction and also a generalization; an abstraction because it no longer denotes or connotes any individual object, but stands before the mind as simple, pure quality, red, or redness; a generalization inasmuch as it is a quality pertaining equally to a great variety of objects. _The Process carried still further._--Having thus obtained the general conception of red, and, in like manner, of blue, violet, yellow, indigo, orange, etc., etc., I may carry the process still further, and form a conception more general than either, and which shall include all these. These are all varieties denoting the certain peculiarity of appearance which external objects present to the eye. Fixing my thought upon this, their common characteristic, I no longer conceive of red, or blue, or violet, as such, but of color in general. In like manner, I observe the properties of different triangles--right-angled, obtuse-angled, acute-angled, equilateral, isosceles. I leave out of view whatever is peculiar to each of these varieties, retaining only what is common to them all--the property of three-sidedness; and my conception is now a general one--triangle. It is in this manner that we form the conceptions expressed by such terms as animal, man, virtue, form, beauty, and the like. A large proportion of the words in ordinary use, are of this sort. They are the names or expressions of abstract, general, conceptions: abstract, in that they do not relate to any individual object; general, in that they comprehend, and are equally applicable to a great variety of objects.