Of course, French military surgeons may have felt that a number of these men would be of just such service in barracks and otherwise as Case 37 (Pruvost). But for one or two cases like Cases 37 and 41 of Pruvost, there are great numbers of other imbeciles who prove quite useless in the army. Two of the Villejuif cases had been volunteers: one volunteer declared that, if he had been intelligent, he never would have enlisted! Ten cases proved unable to use a gun; one turned his gun upon his mates. One regularly forgot the password. One (see Case 42 of Lautier) thought the war too long and tried to take command of the company in order to finish the war one way or the other. Three of the imbeciles had to be evacuated for desertion (unmotivated fugues); two of them cursed their officers. Some of the imbeciles had an emotional diarrhoea throughout their service. Colin suggests that line officers and military surgeons ought to agree that these men are not fit for service, and that the civil authorities of the home towns should advise the review boards about known imbeciles and criminals. In point of fact, previous knowledge of imbecility could have been obtained quite readily in 27 of the 53 cases observed by Colin. A feeble-minded inventor. =Case 38.= (LAIGNEL-LAVASTINE and BALLET, 1917.) A jockey of Nîmes, 31, entered the service May 15, 1917. He retired before the war. He was in the auxiliaries at the moment of mobilization. Nothing is known as to any pathological episodes in his past. He said he had been a poor scholar, had left the primary school at eleven hardly knowing how to write or spell, but he had a lively imagination and was a happy-go-lucky youth, playing many tricks on the trades people. He tried a variety of ideas in the industrial or commercial world with very varying success. He had a mechanical taste. The Colonial Exposition at Marseilles caused him to float a variety of projects, from that of having the visitors photographed on a camel to the sale of lemonade. He said he had been a jockey and then a trainer and had finally become a valet de jockey at Maisons Laffitte. He was a gambler and invented a “system.” He made various inventions in relation to horses. At the end of 1914 he had plans for a bomb thrower and placed his discovery at the service of the War Minister. He was not discouraged by the lack of success of the bomb thrower. He now made an aerial torpedo carrier. He had the idea of the tanks. However, he found the secret of his torpedo carrier printed in a magazine. There was a slight difference between the German apparatus and his own.