Next to its intrinsic value, our method gives the patient the great advantage of enjoying pure fresh air, either in or out of bed, as it keeps the skin and the whole system in such order as to resist the effects of atmospheric influences better than under a weakening process. And every body knows, or, at least, every body ought to know, that free circulation of fresh air is one of the most important means, in contagious diseases, of preventing the malady from becoming malignant, and of lessening the intensity of the contagion. Although the times are passed, when patients in the heat of fever were almost roasted in their beds, whilst a drink of cooling water was cruelly and stupidly denied them; the temperature of the sick-room is, in general, still kept too high, and not sufficient care is taken to renew the air as frequently, I ought to say as constantly, as necessary for the benefit of the patient. Usually there is no ventilation; very seldom a window is opened, especially in the cold season, when epidemics of scarlatina are most common, and commonly the room is crowded with friends of the patient, who devour the good air, which belongs to him by right, and leave him their exhalations to breathe instead. There is nothing better able to destroy contagious poisons than oxygen and cold; and if we consider that every human being absorbs every minute a volume of air larger than the bulk of its own body, we must understand how necessary it is to keep people away from the sick-room, who are not indispensably necessary to the patient, and to provide for a constant supply of fresh air. But whatever may be the arrangement for that purpose, the patient should not be exposed to a draught. Stoves and fire-places are pretty good ventilators for drawing off the bad air from the room; if you take care not to have too much fire, and to allow a current of pure air to enter at a corresponding place, the top of a window, or a ventilator in the wall opposite the fire-place, there will always be pure air in your sick-room. The air coming from furnaces, which unfortunately have become so general, is good for nothing, especially when taken from the worst place in the house, the cellar or basement. I consider the worst kind of stoves better than the best kind of furnaces; only take care not to heat the stove too much, or to exclude the outer air, which is indispensable to supply the air drawn off by the stove for feeding the fire. The difference between a furnace and a tight stove or fire-place is this: The furnace takes the bad air from the basement or cellar, frequently made still poorer through its passing over red hot iron, which absorbs part of its oxygen, and fills the room with it. The room being filled with poor air, none of the pure air outside will enter it, because there is no vacuum. Thus the bad air introduced into the room, and the bad air created by the persons in it, will be the only supply for the lungs of the patients. But should the furnace take its air from outside the house, as it is the case with some improved kinds, there would still be no ventilation in the sick-room, except there be a fire-place beside the register of the furnace. With the stove or fire-place it is different: The stove continually draws off the lower strata, i. e. the worst part, of the air to feed the fire, whilst pure air will rush in through every crevice of the doors and windows to supply every cubic-inch of air absorbed by the stove. Thus the air in the room is constantly renewed, the bad air being carried off and good air being introduced. However, the openings through which the pure air comes in, must be large enough in proportion to allow a sufficient quantity of air to enter the room to make fully up for the air absorbed by the stove; for, if not, the air in the room will become thin and poor, and the patient will suffer from want of oxygen. An open fire, from the necessity of its burning brighter and larger to supply sufficient heat, a comparatively large part of which goes off through the chimney, will require a greater supply of air, and consequently larger ventilators or openings for the entrance of the pure air from outside the room. In very cold weather, and in cold climates in general, stoves are preferable to fire-places, the latter producing a draught, and not being able to heat a room thoroughly and equally, causing one side of the persons sitting near them to be almost roasted by the radiant heat in front, whilst their backs are kept cold by the air drawing from the openings in the doors and windows towards the fire to supply the latter. In merely cool weather, and in moderately cold climates, especially in damp places, I would prefer an open fire to a stove. In cold climates stoves are decidedly preferable, especially earthen ones, as they are used in Germany and Russia. Iron stoves must never be heated too much, as the red hot iron will spoil the air of the room, by absorbing the oxygen, as you can easily see by noticing the sparks, which form themselves outside the stove in very hot places.

53. TEMPERATURE OF THE SICK-ROOM.

The temperature of the sick-room should not be much above 65° Fahrenheit; in no case should it rise above 70, whilst I do not see the necessity of keeping it below 60, as some hydriatic physicians advise.[31] The patient, in the heat of fever, will think 60° high enough, and rather pleasant; and if others do not like a temperature as low as that, they may retire. The person necessary for nursing the patient may dress warmly and sit near the fire. Let the sick-room be as large as possible; or open the door and windows of a room connected with it. Towards the close of the disease, after desquamation has begun, the temperature of the room may be kept at 70°, as then the fever and heat have subsided and the delicate skin of the patient requires a comfortable temperature.

54. WATER-DRINKING.

As the patient should have a constant supply of pure air for his lungs, so he should also have plenty of pure cold water for his stomach, to allay his thirst and assist in diminishing the heat of fever, and in eliminating the morbid poison from his blood. Though cold, the water for drinking should not be less than 48 or 50° Fahrenheit. Whenever there is ice used for cooling the water, the nurses should be very careful not to let it become colder, than the temperature just indicated, except in typhoid cases, when the stimulating effects of icy cold water and ice may prove beneficial.

55. DIET

I have little to say with regard to diet, at least to physicians. During great heat and high fever, the patient should eat little or nothing; but he should drink a good deal. Substantial food must be avoided entirely. When the fever abates, he can take more nourishment, but it should be light. Meat and soup should only be given, when desquamation has fairly begun. Stewed fruit (especially dried apples) will be very agreeable to the patient. In great heat, a glass of lemonade may be given occasionally; however, great care must be taken not to spoil the patient's taste by sweets, or to allow him all sorts of dainties, such as candies, preserves, &c., as it is the habit of weak parents, who like to gratify their darlings' momentary desires at the expense of their future welfare. In torpid cases, some beef-tea, chicken-broth, and even a little wine with water, will raise the reactive powers of the patient. During convalescence, meat may be permitted to such patients as have been accustomed to eat it, and, in general, the patients may be allowed to gradually resume their former diet (provided it were a healthy one), with some restriction in regard to quantity. In general, under water-treatment, the digestive organs continuing in a tolerably good state, and the functions in better order, we need not be quite so careful with respect to diet, as if the patient were left to himself, or treated after any other method of the drug-system. Let the food be plain, and the patient will scarcely ever eat too much. To stimulate his appetite by constantly asking him whether he would not like this or that, is sheer nonsense; and to satisfy his whims, against our better conviction, is culpable weakness.