Let him then proceed to think of as many definite characteristics of his own as he possibly can, and then enter these characteristics in the column which he deems appropriate. It will be found that with the great majority of characteristics no difficulty will be presented, and it will be quite impossible to think of anything which is a physical part of himself, which cannot be placed in one or other of these three categories. Even though there may be a little difficulty as to which column should claim the entry, it will be found that this is due rather to indecision on the part of the reader than to anything else. It is not because he can imagine any other origin for the trait which is for the moment puzzling, but simply because he may be uncertain as to whether it is an inborn character, or one due to the subsequent action of circumstances. Thus he will have no difficulty in placing in the first column such characteristics as the possession of one nose, two eyes, the colour of his eyes, perhaps the shape of his nose, and so forth, these all being germinal inherited characters. Equally simple is it to see that in the second column must be placed such parts of his individuality as speech, writing, the _size_ of his muscles at the moment, and so forth. These obviously have resulted from the action of circumstances on inborn capacities. No embryo can speak or write, though it has within it the inherited capacity to enable it to learn such things. Finally he may find it difficult to think of anything to place under the heading of "Variations"; but, on the other hand, should he happen to be a genius in music or mathematics, or the possessor of six toes or a black mole on his arm, these will indicate to him at once that they are of the nature of "Variations." (It must be remembered, however, that they may be transmitted to successive generations, in which case they become germinal characters.) In a similar way if the reader desires to follow out this analysis of the characters which make an embryo, and which, therefore, afterwards comprise the possibilities of an individual from the point of view of the stimuli under which they are developed, he may easily do so. Another sheet of paper similarly divided into three columns with the headings "Nutrition, Use, and Injury," will enable him to see how his individual characteristics have attained their present development as the result of one or other of these stimuli acting upon the germinal or inherited tendencies. Without going into detail in this matter one may simply note that under the heading of "Injury" will come all those parts of himself of which he has become possessed as the result of disease or accident, whether this be physical, mental, or moral.