As a general rule it is safe to begin the treatment of any illness with these sheets; they refresh the invalid, often ward off the complaint or develop the malady. In the cold stage of intermittent fever these rubbings down are persevered in until heat is produced; when the hot stage ensues, recourse is had to packing sheets, tepid baths, etc. Where there is an excess of caloric, and fever is not declared, rubbing-sheets have a cooling effect, and often put an end to the illness at once. Where there is a want of caloric, as in ague, the Rubbing Sheets cause a determination of heat from the interior to the surface, in the same way that friction, or striking, brings heat out of matter. This may be elucidated by rubbing any part of the body with snow--re-action instantly ensues. After great fatigue or a chill, or where persons have reason to think they have caught cold, two or three of these rubbings-down have an extraordinarily restorative effect. They may be used by old or young, strong or weak, with perfect impunity. In lumbago or rheumatism, or where it is necessary to rouse the vital energies, rubbing-sheets, four consecutively repeated, four times a-day, are frequently prescribed. A friend of mine, after getting wet whilst hunting, sat in his wet clothes, caught cold, and died. I am fully persuaded, if he had applied the Rubbing-sheets on getting home, the fatal result would have been avoided. In some cases where a patient exhibits great weakness, languid circulation, and doubtful reaction, the sheet is wetted in tepid water, and sometimes the body is subjected to the action of cold by degrees, instead of being covered up at once, as is the case with the dripping sheet. There are invalids who cannot suffer anything cold to touch certain parts of their bodies; in such cases the tender part may be covered with a dry cloth, whilst the dripping sheet is applied, and the sensitive portion approached by degrees. XVI.--THE DOUCHE BATH. The douche, of all means employed, is the most powerful in stirring up, and removing humours from the position they may have occupied for years. What is understood by a "douche," is a spring of water, conveyed by pipes through the tops of small huts, from whence it falls in a stream about the thickness of one's wrist. At Gräfenberg, there are six douches in the forest, with the falls of twenty feet, eighteen feet, and fifteen feet, respectively: the douches for women have a fall of only twelve feet, but no difference is made in the dimensions of the stream. Patients are generally some time under the treatment before being permitted to take the douche. The douche is a most powerful stimulant.