§ 164. The following portion of evidence from Dr. Lyon Playfair, which adverts to the management of the evil in the common grave-yards, may however be adduced as an example of the character of some of the improvements already suggested. You have examined into the state of certain church-yards with reference to their sanitary effects; have you not?—I have examined various church-yards and burying-grounds for the purpose of ascertaining whether the layer of earth above the bodies is sufficient to absorb the putrid gases evolved. The carbonic acid gas would not in any case be absorbed, but it is not to this that the evil effects are to be attributed. The slightest inspection, however, shows that the putrid gases are not thoroughly absorbed by soil lying over the bodies. I know several church-yards from which most fœtid smells are evolved, and gases with similar odour are emitted from the sides of sewers passing in the vicinity of church-yards, although they may be above 30 feet from them. If these gases are thus evolved laterally they must be equally emitted in an upward direction. The worst burying-grounds which have come under my notice are those belonging to private persons, generally undertakers, who make their livelihood by interring at a cheap rate. I visited one of these only a few days since. It was about 150 feet long and about 30 broad, and had been used for 80 years as a burying ground, and was still a favourite place of interment among the poor. Of course many bodies are placed in one grave, and when the ground becomes too much raised by bodies, it is levelled, and the boxes, &c., exhumed during the levelling, are thrown into a large cellar fitted to receive them. This whole ground was a mass of corruption, as may well be supposed, and it is situated in a densely populated neighbourhood. I mention this case as one among many other similar cases of private burying-grounds, in order to suggest that attention should be paid in any alteration respecting the laws regulating interments, to prevent burying-grounds being kept as objects of pecuniary speculation, at least within towns; for this practice gives much inducement to violate every feeling of decency and regard for public health in the desire for gain.