I shall give here an example of injection; a corpse is injected by the carotid with from five to seven quarts of the acetate of alumine at 20°, and containing in solution about two ounces (fifty grammes) of arsenic acid. Four days after this injection, if it is intended to prepare the large and small vessels, inject by the aorta half a quart of a mixture, equal parts, of the essence of turpentine and essence of varnish; finally, make a single cast of a hot injection of a mixture of suet and of rosin, in equal parts, coloured with cinabar for the arteries, and with a black or blue colour for the veins. Then, the corpse, or the part of the corpse which it is intended to preserve, is prepared and dissected at leisure, according to the wish of the operator. When the body has been injected, as above described, the preparation which is made of it easily dries in the open air from the month of May to the month of October; during the winter it is necessary to deposit it in an oven, or in a heated chamber. When the desiccation is slow, or the moisture is excessive, the byssus sometimes develops on its surface, but this may be washed off, and a layer of varnish will prevent new vegetations. This preparation will be certainly superior to any contained in cabinets of anatomy. In support of this assertion, I will cite an authentic fact, that of a woman whose body was submitted to the examination of the commissioners of the Institute and of the Royal Academy of Medicine, appointed to prove the value of my process. On the 10th of May, 1834, a woman died in the wards of M. Majendie, at the Hôtel-Dieu; the body was injected the next day with the acetate of alumine; at the termination of this operation, it remained fresh until the 15th of January, 1835, when it dried without experiencing any alteration. The commissioners of the two Academies made experiments upon this body, at different periods. On the 15th of January, 1836, M. Guèneau de Mussy, to assure himself of the state of the cerebral substance, demanded the head to be opened, I profited by this occasion to _take off the hairy scalp_. The same day, M. Breschet, desiring to know what would result from the exposure of this corpse to the open air, it was suspended beneath the shed of the dissecting rooms (ècole pratique.) Ten months after, in the month of November of the same year, it had not experienced any alteration. At this period, M. Gaucherant, inspecting overseer of the ècole pratique, wishing to terminate the experiment, the body was sent to the cemetery.