All cracks or crevices in rooms to be fumigated must be sealed or calked, to prevent the escape of the disinfectant, and one of the following disinfectants used in the quantities named: a. Sulphur, 4 lbs., for every 1,000 cubic feet of air space, 8 hours' exposure. b. Formaline, 6 oz. for every 1,000 cubic feet of air space, 4 hours' exposure. c. Paraform, 1,000 grains for every 1,000 cubic feet of air space, 6 hours' exposure. The following disinfecting solutions may be used for goods, which are afterwards to be washed: a. Carbolic acid, 2 to 5 per cent. b. Bichloride of mercury, 1-1,000. SCARLET FEVER. SCARLATINA. Scarlet fever is an acute, contagious disease. It begins abruptly. The child may have a severe attack and be quite sick from the beginning, or he may have a mild attack and not be very sick. Usually the fever rises rapidly, the child vomits and complains of a sore throat. If the attack is very mild the throat symptoms may not cause any distress. Frequently, about the third day, there are patches on the tonsils. Prostration may be profound if the fever is very high. Convulsions and diarrhea are sometimes present in very young patients. It takes from two to six days to develop scarlet fever from the time the child is exposed to it. The disease may be caught at any time, but it is most contagious during the time the patient is scaling. It is not as contagious as measles. Some children seem to escape even though directly exposed to it. It is more frequent in the fall and during the winter, and it is more severe during the latter months. Eruption.--The eruption appears at any time after twelve hours. It may not, however, appear before the third or fourth day. It lasts from three to seven days, and only takes a few hours to cover the whole body after it is first seen. The rash is first seen on the neck or chest; it appears as a red, uniform blush, but, when examined closely, small reddish spots may be seen all over it. If the rash is very faint and of a doubtful character a hot bath may bring it out. A bright red, well-developed rash is a sign of good heart action. In the event of heart failure, the rash fades quickly. Itching is a constant symptom after the rash is fully out. About the eighth day the rash begins to scale or desquamate. It begins on the neck and chest. It takes from one to three weeks to scale completely, from the time it begins to peel. The hands and feet are the last spots to scale. It must always be kept in mind that mild cases are just as contagious as severe cases, and that a mild case may cause in another person a very severe attack.