Animal combustion is consequent on the internal organs and flesh being de-electrised, the stomach first, by means of spirituous liquors, which, like fire in so doing, promote the sensation of heat. The stomach and adjacent organs, from being thus de-electrised, are prepared to receive the decomposing medium; and from oxygen, to exclude electric matter, being absent, the flesh is brought to the state of smothered combustion and charred: it may now be considered in the light of a _mortuum caput_. The spontaneous combustion of greasy clothes, damp hay and other things, is promoted by the limited quantity of air in which such articles are confined. To the hand the air seems warm before combustion has commenced, which indicates deficiency of electric matter, but which, in time, the air acquires from greasy clothes, and from damp hay, the removal of which is succeeded by the destroying medium, by which the elements of the combustible become separated, set free, and dispersed. In summer, when the atmosphere is greatly deficient of what may be termed winter electric matter, all woodwork is in a desiccated condition; and the slight friction of limb against limb is sufficient to make space for medium of space to enter in excess, and convert to fire, tree after tree, the whole of a forest. The combustion of a candle is well worthy the philosopher's attention. The candle while burning, comprises a series of the simplest operations, and far beyond the powers of art to effect or otherwise imitate; yet from indifference to the familiar, and the paucity of skill required in the construction, there is nothing less noticed with philosophic acumen. The mechanism and materials to be wrought are the same; which consist in a slender, compact, portable cylinder of tallow, within which is included an equal length of wick. The various operations of de-electrising, fluidifying, and gas-making, are performed in silent, regular succession, unretarded by friction and unincumbered with containing vessels, Nature furnishes the power. The wick answers the purpose of service-pipes, through which the half-wrought materials are conveyed in a gaseous form to the refining fire, within which they remain as in a gasometer of supply, to be gradually diffused through the surrounding flame, and there receive the finishing lustrous polish. The new formation is now a refinery to the work in progress, and is curiously situated over the materials where only it could serve the numerous requisite purposes. Nor does the gradual consumption of the machinery derange the order of operation, work and wear being carried on simultaneously to the end. The many-coloured tissue wrought, of starlight shine and of expanded base, is tastefully tapered as if to please in appearance, as well as lighten our darkness. Thus by natural means, operating on almost uncostly materials, mankind are supplied with that by which darkness is turned to day--the candle flame.