This commission was composed of four members of the Faculty of Medicine, MM. Borie (who at his death was succeeded by M. Majault), Sallin, Darcet, Guillotin, to whom were added five members of the Academy of Sciences, MM. Franklin, Leroy, Bailly, Lavoisier, and de Bory. Their report describes in scrupulous and careful detail everything that they witnessed at the house of Deslon, who carefully and circumstantially assured them that Mesmer's procedures and his own were quite the same; and who allowed them the greatest freedom in examinations and tests. They tried the treatment themselves, but felt no effects. They emphasized the fact that public performances in which excitement and contagion have full play are more successful than private ones, and that the subjects most easily influenced are to be found among the ignorant rather than among the educated classes. They blindfolded one of their subjects, and pretended to perform the usual passes, while they really did nothing; yet the expected results ensued. It was believed that when the subject came in contact with a tree that had been magnetized, the symptoms of an approaching crisis would be manifested; accordingly they had a tree in Franklin's garden magnetized, but their subject went to four other trees and at each exhibited the usual phenomena. From such experiments, ingeniously devised and varied, the commissioners concluded that the effects witnessed were due to an overstimulated imagination, to an anticipation of the result, to excitement and contagion. "Let us represent to ourselves," they say, "the situation of a person of the lower class, and in consequence ignorant, attacked with a distemper and desirous of a cure, introduced with some degree of ceremony to a large company partly composed of physicians, where an operation is performed upon him, totally new, and from which he persuades himself beforehand that he is about to experience prodigious effects. Let us add to this that he is paid for his compliance, that he thinks he shall contribute more to our satisfaction by professing to experience sensations of some kind, and we shall have definite causes to which to attribute these effects."