2. Inspired by the above observations, Dr. Mercier has worked out a classification which I shall give as an example of the analytic and comparative method. It is in any case the most recent and the most detailed.[94] Proceeding after the manner of zoologists and botanists, he divides into classes, sub-classes, genera, and species, forming seventeen tables. We gather from these that there are 6 classes and 23 genera, under which may be ranged (after deducting all repetitions and duplicate entries) 128 manifestations of feeling, such as are to be found in common experience and rendered in current language. It is not possible, nor would it serve any useful purpose, to present this classification here in detail; I shall only indicate the 6 great classes with some sub-divisions, which will enable us to understand their nature. Footnote 94: _The Nervous System and the Mind_ (1888), pp. 279-364. The first class includes the feelings primarily affecting the conservation of the physical or mental organism. It comprises 2 sub-classes (according as the primary excitation is initiated by the environment, or within the organism itself), 2 orders, and 9 genera. The second is that of the feelings primarily affecting the perpetuation of the race, considered as simple wants. Two sub-classes: primary (sexual emotion and its varieties) and secondary (paternal, maternal, filial, etc., feelings). With the third class we leave behind the region of the primitive and fundamental feelings. It includes those which relate to the common welfare (community, family, etc.). It comprises 2 orders, each of which is further divided into several genera—viz., the patriotic and the ethical emotions. The fourth class (only vaguely differentiated from the preceding) is that of the feelings relating to the welfare of others: sympathy, benevolence, pity, and their opposites. The fifth class comprises the feelings which are neither conservative nor destructive, so that here we pass beyond the region of pure utility, whether individual or social. It is divided into 2 orders and 5 genera—viz., admiration, surprise, the æsthetic feeling, the religious feeling, and the “feeling of recreation.” The sixth and last class is that of the feelings which correspond to abstract relations (in ordinary nomenclature designated as intellectual feelings)—conviction, belief, doubt, perplexity, scepticism. It has no sub-divisions.