The enlightenment of the public demands more attention to these important matters, as there is no necessity for the untimely and indecent burial of the loved but unfortunate victims of mortality, when due observance is given to the progress of art in modern science. To successfully retain the dead for such a period of time as will enable the bereaved friends to make such arrangements for burial as the occasion may require, without the necessity of mutilating or eviscerating in the horrible manner that has been practised in many instances, has been the design of the writer, who has devoted much time in the work, and hopes, with the aid of others, in the no distant future, to make such additional suggestions and contributions as will practically apply to the wants of the profession, as well as meet the approbation of a grateful public. Scientific research has defined and established those fixed laws of nature with that precision whereby organic matters may be traced to their simple elements. We will herein endeavor to very briefly trace, as far as possible, the chemical changes that are observed in dead animal matter. We assert that in the majority of cases (with a given temperature maintained), the first described subject will be the first to become an uncontrollable mass from the agents of putrefaction; first, simply by the abundance of those fluids contained in subjects that immediately become active agents of dissolution, while such agents have been completely exhausted by the disease of the second.