Philadelphia. Population about 120,000,—deaths 4,600, proportion of one to twenty-six. [This was an uncommonly sickly season in Philadelphia.]

Baltimore. Population estimated at 65,000; deaths were 2,108; proportion of one to thirty and two thirds.

I have thus selected the mortality of St. Louis during the most sickly season since my residence in this country, and compared it with the bills of mortality of four eastern cities for two years, those of 1820 and 1823, and the result is favorable to the health of St. Louis, and by consequence, to the adjoining States. For ten years past, there has been no general sickness in St. Louis, during the summer and autumnal months, excepting the cholera in 1832.

Some parts of Indiana and Ohio are unquestionably more subject to bilious attacks than Illinois. The reason is obvious. Much of that region is heavily timbered, and, upon cutting it away in spots, and letting in the rays of the sun upon vegetable matter undergoing decomposition, miasmata are generated. These regions will become comparatively healthy, when put under general cultivation.

The story is told, that the late emperor of France lay encamped with one of his armies near a place reputed unhealthy, when one of his officers requested a furlough. The reason being asked, and given, that the place was unhealthy, and the applicant feared to die an inglorious death from fever: Napoleon replied, in his accustomed laconic style, "Go to your post; men die everywhere."

If a family emigrate to a new and distant country, and any of the number sicken and die, we are apt to indulge in unavailing regret at the removal; whereas had the same afflictive event happened before removal, it would have been regarded in quite a different light. Let then, none come to Illinois who do not expect to be sick and to die, whenever Divine Providence shall see fit so to order events.

The milk sickness is a disease of a singular character, which prevails in certain places. It first affects animals, especially cows, and from them is communicated to the human system by eating the milk, or flesh. The symptoms of the disease indicate poison; and the patient is affected nearly in the same way, as when poisonous ingredients have been received into the system. Cattle, when attacked by it, usually die. In many instances it proves mortal in the human system; in others, if yields to the skill of the physician. Much speculation has been had upon its cause, which is still unknown. The prevailing idea is, that it is caused by some poisonous substance eaten by the cattle, but whether vegetable or mineral, remains undetermined. Physicians and others have attempted to ascertain the cause of this disease, but hitherto without success.

It infests only particular spots, or small districts, and these are soon found out. There are places in Ohio, Indiana, and the southern states, where it exists. Its effects are more frequent in autumn than any other season; and to guard against it, the people either keep their cows in a pasture, or refuse to use their milk. Some have supposed this disease to be produced by the cattle feeding on the cicuta virosa, or water hemlock; as a similar disease once infested the cattle in the north of Europe, the cause of which was traced out by the great naturalist Linnæus; but it is not known that this species of plant exists amongst the botanical productions of Missouri and Illinois.

Anxious to furnish all the information, on this very important subject, to persons desirous of emigrating to the West, I will prolong this chapter by inserting the following:

"ADVICE TO EMIGRANTS, RECENT SETTLERS, AND TO THOSE VISITING THE SOUTHERN COUNTRY.