By some wonderful adaptation of nature there is a great effort to make other nerve channels take up the work of the destroyed cells, and hence the value of keeping the muscles artificially active by the use of massage and mild electric treatment. This treatment should be used early in the case, and then only with the advice and supervision of a competent physician. The destruction of nerve-cells in the segment of the spinal cord is sometimes so extreme that a total paralysis of one or more extremities follows. This is a grave shock to the growing child, and it may be that all growth of that member will stop. The long bones will not lengthen. If one group of muscles remain active and unopposed in their action, deformity will follow. These deformities can be corrected by the orthopedic surgeon, and can usually be checked if the physician’s advice is sought. _Serum Treatment._—The serum injections were given even as long as thirty years ago. Intraspinal injection of an immune serum is effective when introduced in the preparalytic stage. _Prophylaxis._—The _virus_ or germ of _poliomyelitis_ is found _in the nose, the mouth, and intestinal tract_ (it is also found in various other parts of the body). As house-flies may carry the virus after crawling over the person suffering from the disease, all insects are a dangerous asset to any household. Disinfection of secreta and excreta should be carried out. The mouth and nose should be disinfected. =Quarantine= should be rigidly enforced, and all the necessary precautions taken to prevent the spread of a contagious, infectious disease. DISINFECTION OF FECES AND URINE. Disinfect the feces and urine by mixing with each evacuation double its volume of 1 per cent. chlorid of lime solution or double its volume of 5 per cent. carbolic acid solution. Cover the vessel and allow it to stand for from one to two hours before emptying its contents into the closet. Put all typhoid linens in cans used for that purpose only. Sprinkle with formalin and keep covered until sent to laundry. N. B.—While performing work in which the hands come in contact with soiled linen and bed-pans, fill finger-nails with soap to keep them clean and to prevent them from acting as carriers of disease. A WASHING FLUID FOR SOILED CLOTHES. One can of lye, 10 cents; Lump of ammonia, 5 “ Salts of tartar, 5 “ Put in a stone jar and set it in the open air. Pour over it 1 gallon of boiling water. Use ½ cupful to a boiler of clothes and add ½ bar of soap. Soak clothes over night in cold water; then place clothes into the boiler and boil for twenty minutes. Plain pieces need very little rubbing. Rinse two or three times in clear water before hanging clothes out to dry. INCUBATION PERIOD AND QUARANTINE.