Perhaps the study of these peculiarities of art in the insane, besides showing us a new phase in this mysterious disease, might be useful in æsthetics, or at any rate in art-criticism, by showing that an exaggerated predilection for symbols, and for minuteness of detail (however accurate), the complication of inscriptions, the excessive prominence given to any one colour (it is well known that some of our foremost painters are great sinners in this respect), the choice of licentious subjects, and even an exaggerated degree of originality, are points which belong to the pathology of art. CHAPTER III. LITERARY AND ARTISTIC MATTOIDS. Definition--Physical and psychical characteristics--Their literary activity--Examples--Lawsuit mania--Mattoids of genius--Bosisio--The _décadent_ poets--Verlaine--Mattoids in art. We have just been considering, in madmen, the substantial character of genius under the appearance of insanity. There is, however, a variety of these, which permits the appearance of genius and the substantial character of the average man; and this variety forms the link between madmen of genius, the sane, and the insane properly so called. These are what I call semi-insane persons or mattoids. This variety constitutes, in the world of mental pathology, a particular species of a genus distinguished by Maudsley as “odd, queer, strange” persons of insane temperament, and previously by Morel. Legrand du Saulle, and Schüle (_Geisteskrankheit_, ii., 1880) regard them as _hereditary neurotics_, Raggi as _neuropathics_, and now many as _paranoiacs_--a terminology which produces a hopeless confusion. The graphomaniac, representing the commonest variety, has true negative characteristics--that is to say, the features and cranial form are nearly always normal (Bosisio, Cianchettini, F----, P----, &c.). His characteristics are not the result of heredity; at most, he is the son of a man of genius (Flourens, Broussais, Spandri, Knester, &c.). This form of aberration is most frequently found in men; I only know of one exception in Europe--Louise Michel--and it appears more especially in great cities, worn out with civilization. The mattoid shows far fewer signs of degeneracy than the insane properly so called:--Of 33 mattoids only 21 showed degenerative characters, and of these last 12 had 2, 2 were found to have 3, there were 2 with 4, and only 1 with 6. Another negative characteristic is the survival of family affection, and even of that for the human race in general, sometimes reaching such a point as to become exaggerated altruism; though, in many cases, vanity enters largely into the composition of this virtue. Thus Bosisio thinks of and provides for the well-being of posterity, and even of the dead. Thus D---- loves his wife and grandchildren, and constantly works for his family; Cianchettini supported a deaf and dumb sister; Sbarbaro, Lazzaretti, Coccapieller, adored their wives.