Secondly, we should avoid the use of stagnant water, even though it should be free from animal impurities. Especially should we be cautious where there is a liability, or even a possibility, to impurity and stagnation both. Either of these causes may, as it is most fully believed, produce disease; but if so, what is not to be expected from a combination of the two? Our wells should be often cleaned. It is not possible, of course, to say with exactness, how often, but we shall hardly err in the line of excess. Very few wells are cleaned too often. Once a year, in ordinary cases, cannot be too much; nor am I quite sure that twice would be useless. It seems to me quite possible to exclude animals from our wells, would we but take the necessary pains; and this, too, without covering them closely at the top. I can not see how any toad, unless it be the tree-toad so called, could climb a well-curb three feet high. Other animals, however, might do so, and therefore I would keep a well as closely covered as possible. Many, I know, believe it desirable that the surface of the water in a well should be exposed to the air. I do not believe there is any necessity for this, though it is certainly desirable to avoid stagnation of the air at the bottom. Motion is essential, I might even say indispensable. I have sometimes thought the modern endless or chain pump as perfect a fixture as any other. Thirdly, we may learn from the details of the foregoing chapter, the necessity of having in our sick-chambers the right sort of nurses or attendants. There should be a class of persons educated to this service, as a profession; and most happily for the prospects of the great human family, such efforts are now being made; it is hoped and believed they will be crowned with success. One thing more may, as I think, be inferred from the story of my sickness as above:--the folly of multiplying physicians. In the present case, when the physician's own family was in a condition to demand a large share of his attention, if not to absorb all his energies, it may have been desirable to call in an additional medical man as counsellor. But the multiplication of counsel, besides adding to the danger of too much dosing and drugging, brings with it a host of ills too numerous to be mentioned in this place, and should be studiously avoided. My full belief is, that Dr. Thornton was a principal agent in creating the dangers he deprecated, and which came so near effecting my own destruction. CHAPTER XXIII. ABOUT TO DIE OF CONSUMPTION.