If, perchance, in some instances, no prejudicial influence is exerted upon the health of persons inhabiting the neighbourhood of burial-grounds, that fortunate immunity from the ordinary effects of effluvia arising from decomposing animal remains, accumulated in large quantities, is to be attributed, not to the innocence or innocuous nature of the emanations, but to the wholesome influence of winds and currents, in securing a constant supply of pure air, and which prevent the accumulation of these gaseous poisons in quantities sufficient to produce the bad effects which are commonly experienced in situations where they are much concentrated. It is almost impossible to adopt measures which will completely prevent the admission of effluvia from burial-grounds into the atmosphere, and it were therefore wise that the evil, a necessary one as it would appear to be, should be made to exist where it is least likely to do harm,—and that situation is certainly in the country, in the open fields, where there are few or no houses. It is to be hoped that the subject of exurban cemeteries will shortly obtain the consideration of the government of this country, and of the magistrates of the various towns,—as it involves interests of the most important nature. Several large towns have already cemeteries at a little distance in the fields; and among others, Glasgow has its City of the Dead, or Necropolis, as it is styled, which is situated on a height adjoining the town. Paris, the capital of that country which has produced many of the most eminent chemists, has not been tardy to avail itself of the light which their philosophers have thrown upon the composition of animal bodies, and the chemical constitution of the atmosphere. That capital boasts a magnificent cemetery, called Pere la Chaise, which is situated at a little distance in the open country.