“As regards the envelopes of the fœtus, and the placenta which it may be intended to preserve after an accouchment at full term, injections of different colours are forced into the umbilical arteries and veins; this injection should not be too delicate, or pushed with too much force, otherwise it will pass from one of the vessels into the other. These two parts should be allowed to soak some time in an aluminous water, or, what is better, in a sublimated alcoholic solution, then place a hog’s bladder in the cavity of the membranes, blow up the bladder, and thus expose the parts to the air for desiccation; after which the bladder is to be withdrawn. The membranes, with the placenta, may thus be preserved, by placing the uterine face of the latter sometimes within sometimes without the cavity of the membranes. These same parts can be preserved in liquors. Finally, some persons make use of the method of corrosion to prepare and preserve the placenta.” It is useless to advance here new observations; those which have been already presented on the occasion of preservation, considered in general, are equally applicable to the present. It will be perceived in the following chapter what means I propose to substitute for them, as meriting the preference. CHAPTER VIII. GENERAL PROCESSES FOR THE PRESERVATION OF OBJECTS OF NORMAL ANATOMY, PATHOLOGICAL ANATOMY, AND OF NATURAL HISTORY. EMBALMING. A portion of my researches has been submitted to the examination of commissioners, appointed by the Institute, and by the Academy of Medicine. After long and repeated experiments, MM. the commissioners, have been unanimous upon the utility of the processes of preservation which I propose, and in particular my process for the preservation of subjects for the amphitheatres, the only one for which it was important for me to obtain a definite sanction, recommended by the Institute, is applied to the dissecting rooms of Clamart, with a success that every one may witness. The faithful and complete exposition of the numerous trials which I have attempted, will furnish me, in this chapter, the occasion of indicating the most efficacious means of preservation for objects of pathological anatomy and of natural history. And, as it is incumbent on a man of study, disinterested in all that concerns science, I will give publicity to the result of my labours, the composition of the different liquids, and the mode of using them. As for my process of embalming, I have thought that it ought to remain my property, and that one exclusively addicted to chemical studies was more qualified than the physician to subject it to those modifications which each particular case requires. I have secured a patent of invention; for my method differs essentially enough from the preparations which I indicate for the purposes of anatomy.