There are two more which will be interesting reading to our modern scientists: _7th. The properties of matter, and of organized body, depend on this operation._ _8th. The animal body experiences the alternate effects of this agent; and it is by insinuating itself into the substance of the nerves, that it immediately affects them._ Among other important works which appeared between 1798 and 1824, when the French Academy appointed its second commission to investigate mesmerism, the _Annales du Magnetisme Animal_, by the Baron d’Henin de Cuvillier, Lieutenant-General, Chevalier of St. Louis, member of the Academy of Sciences, and correspondent of many of the learned societies of Europe, may be consulted with great advantage. In 1820 the Prussian government instructed the Academy of Berlin to offer a prize of three hundred ducats in gold for the best thesis on mesmerism. The Royal Scientific Society of Paris, under the presidency of His Royal Highness the Duc d’Angoulême, offered a gold medal for the same purpose. The Marquis de la Place, peer of France, one of the _Forty_ of the Academy of Sciences, and honorary member of the learned societies of all the principal European governments, issued a work entitled _Essai Philosophique sur les Probabilités_, in which this eminent scientist says: “Of all the instruments that we can employ to know the imperceptible agents of nature, the most sensitive are the nerves, especially when exceptional influences increase their sensibility.... The singular phenomena which result from this extreme nervous sensitiveness of certain individuals, have given birth to diverse opinions as to the existence of a new agent, which has been named animal magnetism.... We are so far from knowing all the agents of nature and their various modes of action that it would be hardly philosophical to deny the phenomena, simply because they are inexplicable, in the actual state of our information. It is simply our duty to examine them with an attention as much more scrupulous as it seems difficult to admit them.”