Cholera and Personal Habits.

—The letter from our regular correspondent in Paris, in the Journal of last week, was chiefly occupied with an account of the recent prevalence of epidemic cholera in that city; the writer selecting his facts principally from official reports and the discussions in the medical societies. This week we give another letter on the same subject, from an occasional correspondent who derived his information more from personal observations and inquiries during a temporary stay in Paris while the disease was in progress. Both correspondents represent the disease as commencing among the poorest and most unsanitary part of the population, the "rag pickers," and in the quarters occupied by them. Both emphasize the statement that those who were addicted to habits of dissipation and personal uncleanliness furnished by far the larger proportion of those who fell victims to the disease. And another writer states that of those admitted to the hospitals,