If, on the other hand, too great a pressure is brought to bear, so as to remove the obstruction by the mere weight of the fluid injected, the walls of the vessel may not be able to resist the strain, and the injecting fluid loses itself in the surrounding tissue and cavities, thereby failing to accomplish its mission. PROCESS OF EMBALMING. The following process is more laborious and requires more time than the one already given, but at the same time it is more complete and lasting, and when the operation is skillfully and properly performed, the body may be said to be embalmed for an indefinite period of time. But to carry out this process to a successful issue, it will be found strictly necessary to study well, and bear in mind, all the details of the operation. It would be impossible to omit any part of the process and still expect the same results, for, after repeated experiments and trials under favorable and adverse circumstances, the result has always proved to be the same. Still, this process is regulated by the same laws and governed by the same conditions which affect a body under all circumstances. An explanation of these conditions has already been given, and it will be found that a thorough knowledge of these will materially assist the operator in his work. Let us suppose, for one moment, that a man entirely unacquainted with the causes which may affect the morbid conditions of the veins and arteries, goes recklessly on, and commences to inject some part of the circulating system; if that system is in a normal condition the injection will prove successful; if not, the worst consequences may follow. How is he then to remedy his mistake? His very limited knowledge, if he has any, will be of no avail to him. It is in the lack of a sufficient understanding of the human organism that the cause of many failures is to be found. When the proper antiseptics are used, the fault does not lie in the inefficiency, but in the manner in which they have been employed. It is unnecessary to repeat here what we have before stated, that in order to understand thoroughly the process of embalming, the operator must make himself familiar with the explanations already given, and also with those which shall be found hereafter. It will be seen in the following pages that the mode of treatment to which the body is subjected in this process, is entirely different from that which has already been given. The completeness of this process will be readily understood after a careful study of its details, and if strictly followed in every particular, will be found not only satisfactory in its results, but also lasting for an indefinite period of time.