In Cromwell's "History of Clerkenwell," pp. 318, 319, we hear of the last of Black Mary's Hole. He says, "Beneath the front garden of a house in SPRING PLACE, and extending under the foot-pavement almost to the turnpike gate called the Pantheon Gate, lies the capacious receptacle of a _Mineral Spring_, which in former times was in considerable repute, both as a chalybeate, and for its supposed efficacy in the cure of sore eyes.... About ten years back, when Spring Place was erected, the builder removed every external appearance of Walter Baynes's labours, and converted the receptacle beneath into a cesspool for the drainage of his houses. The spring thus degraded, and its situation concealed, it is probable that the lapse of a few more years would have effaced the memory of it for ever, had not an accident re-discovered it in the summer of 1826. Its covering, which was only of boards, having rotted, suddenly gave way, and left a large chasm in the footpath. After some efforts, not perfectly successful, to turn off the drainage, it was then arched with brickwork, and a leaden pump placed over it, in the garden where it chiefly lies. But the pump being stolen during the following winter, the spring has again fallen into neglect, and possibly this page alone will prevent its being totally forgotten." Still following the Fleet to its outfall, we next come to Bagnigge Well, a chalybeate spring, first used medicinally, and then, like all these Spas, merely as a promenade, and place of out-of-door recreation. Originally, this spring probably belonged to the Nunnery at Clerkenwell, and may possibly be the "Rode Well" mentioned in the Register of Clerkenwell. But we are indebted to Dr. Bevis, from whose pamphlet I have already quoted, for a history of its modern rise and development (p. 38).