In former times, however, when from the comparatively uncultivated state of the people, contagious diseases were more common, there were several laws and regulations on this head, which have now fallen into disuse. Many cities have still some relics of their Lazar-house, situated at some distance without the walls;[144] and there was also an ancient writ _De Leproso amovendo_, to remove a leper or lazar who thrust himself into the company of his neighbours in any parish, either in the church, or at other public meetings, to their annoyance. _Reg. Orig._ 237. By the 1st _James, c._ 31. (now expired) it was made felony if any one having a Plague sore running upon him goes abroad, 1 _Hale, P. C._ 432.[145] And to this day it is an indictable offence for any person to pass through the streets, or cause others to pass through the streets, even for medical advice, while they have the Smallpox upon them.[146] Previous to the important discovery of Vaccination, this law would have been attended with very considerable hardship; as it precluded the patient from the best remedy for the disorder—exposure to fresh air; yet there can be no doubt that in this as in all other cases, individual interest must yield to general policy. Had the rule been more carefully attended to, many of the pests to which human nature is subject, might have been checked or even extirpated in the commencement of their progress. There is one disorder, to check the propagation of which has been singularly neglected, under the curious pretence that any regulation would be an encouragement to immorality; we cannot assent to the validity of this objection, and think that we should find little difficulty in refuting it. But the disease is undoubtedly on the decline both as to its frequency and its virulence.[147] The superior mode of medical treatment, by which many cases are arrested in the earliest stage, may have tended greatly to this effect; but we are inclined to attach yet greater importance to a change of habit in the upper and middle classes of society. The mode of life handed down to us by the poets, dramatists, novelists, and essayists from _Charles_ to _George_ the second, unhappily confirmed by the criminal records of the same period, has no existence in modern manners: drunkenness is no longer a fashionable vice; the tavern parties, which even _Addison_ did not blush to describe, no longer disgrace us. From these social improvements, and from increased habits of cleanliness, we may deduce the milder form and more unfrequent occurrence of the disease, which poisons human life at its source. Still we feel some astonishment that the change has not been forwarded by a measure of the police; for though a Parisian system might savour somewhat too much of our own ancient abuses,[148] yet it would neither be difficult or immoral for the magistrates, when they occasionally clear the streets for the night, to order the detention of