The crowded manner in which the common people live together in small apartments in all the cities, the confined streets and, above all, the want of cleanliness in their persons, beget sometimes contagious diseases that sweep off whole families, similar to the plague. In Pekin incredible numbers perish in these contagious fevers, which more frequently happen there than in other parts of the empire, notwithstanding the moderate temperature of the climate. In the southern provinces they are neither so general, nor so fatal as might be expected, owing, I believe, in a very great degree, to the universal custom among the mass of the people of wearing vegetable substances next the skin which, being more cleanly, are consequently more wholesome than clothing made from animal matter. Thus, linen and cotton are preferable to silk and woollen next the skin, which should be worn only by persons of the most cleanly habits. Another antidote to the ill effects that might be expected from want of cleanliness in their houses and their persons, is the constant ventilation kept up in the former both by day and night: during warm weather, they have no other door but an open matted skreen, and the windows are either entirely open or of thin paper only. Notwithstanding their want of personal cleanliness, they are little troubled with leprous or cutaneous diseases, and they pretend to be totally ignorant of gout, stone, or gravel, which they ascribe to the preventive effects of tea. In favour of this opinion, it has been observed by some of our physicians, that since the introduction of tea into common use, cutaneous diseases have become much more rare in Great Britain than they were before that period, which others have ascribed, perhaps with more propriety, to the general use of linen; both, however, may have been instrumental in producing the happy effect.