The history of the London plague-pit between Soho and the present Regent Street shows that, after the last great plague of 1665-66, more caution was used against infection from the buried plague-bodies. Macaulay says it was popularly believed that the earth was deeply tainted with infection, and could not be disturbed without imminent risk to human life; and he asserts that no foundations were laid in the pest-field till two generations had passed and till the spot had long been surrounded with buildings, the space being left blank in maps of London as late as the end of George I.’s reign[60]. After 1666 the old churchyards were not less crowded than before, but more crowded, perhaps because coffined corpses occupied more space and decayed more slowly. On 17 October, 1672, Evelyn paid a visit to Norwich: “I observed that most of the churchyards (tho’ some of them large enough) were filled up with earth, or rather the congestion of dead bodys one upon another, for want of earth, even to the very top of the walls, and some above the walls, so as the churches seemed to be built in pitts.” The same day he had visited Sir Thomas Browne, the author of the famous essay on urn burial or cremation, (suggested to him by the digging up of forty or fifty funeral urns in a field at Old Walsingham). The essay is full of curious learning and equally curious moralizing. But Sir Thomas, though a physician, has not a word to say on so proximate a topic as the state of the Norwich churchyards, which came under his eyes and perhaps under his nose every day of his life[61]. The practice of burying in coffins, which came at length within the means of all classes, may seem too paltry a cause to assign, even in part, for so remarkable an effect as the absolute disappearance of plague after a duration of more than three centuries. My view of the matter is that the virus would have died out of itself had it not been continually augmented, or fed by its appropriate pabulum, and that the gradual change in the mode of interment helped to check such augmentation or feeding.