combinations. The effects of unguarded interments have, however, as will subsequently be noticed, been observed with greater care on the continent, and the proximity of wells to burial-grounds has been reported to be injurious. Thus it is stated in a collection of reports concerning the cemeteries of the town of Versailles, that the water of the wells which lie _below_ the church-yard of St. Louis could not be used on account of its stench. In consequence of various investigations in France, a law was passed, prohibiting the opening of wells within 100 metres of any place of burial; but this distance is now stated to be insufficient for deep wells, which have been found on examination to be polluted at a distance of from 150 to 200 metres. In some parts of Germany, the opening of wells nearer than 300 feet has been prohibited. § 15. Where the one deleterious cause is less complicated with others, as in open plains after the burial of the dead in fields of battle, the effects are perceived in the offensiveness of the surface emanations, and also in the pollution of the water, followed by disease, which compels the survivors to change their encampments. The fact is thus adduced in the evidence of Dr. Copeland:— “It is fully ascertained and well recognized that the alluvial soil, or whatever soil that receives the exuviæ of animal matter, or the bodies of dead animals, will become rich in general; it will abound in animal matter; and the water that percolates through the soil thus enriched will thus become injurious to the health of the individuals using it: that has been proved on many occasions, and especially in warm climates, and several remarkable facts illustrative of it occurred in the peninsular campaigns. It was found, for instance, at Ciudad Rodrigo, where, as Sir J. Macgregor states in his account of the health of the army, there were 20,000 dead bodies put into the ground within the space of two or three months, that this circumstance appeared to influence the health of the troops, inasmuch as for some months afterwards all those exposed to the emanations from the soil, as well as obliged to drink the water from the sunk wells, were affected by malignant and low fevers and dysentery, or fevers frequently putting on a dysenteric character.” § 16. In the metropolis, on spaces of ground which do not exceed 203 acres, closely surrounded by the abodes of the living, layer upon layer, each consisting of a population numerically equivalent to a large army of 20,000 adults, and nearly 30,000 youths and children, is every year imperfectly interred. Within the period of the existence of the present generation, upwards of a million of dead must have been interred in those same spaces.