The DIAGNOSIS of chyluria consists in the recognition of the chylous state of the urine. This, ordinarily very easily recognized, might be taken in its slight degrees for phosphatic or uratic or purulent conditions of the urine, and vice versâ. The disappearance of the first on the addition of acids, of the second on the application of heat or alkalies, will resolve any doubt, while the microscope will detect the pus-corpuscles in the last. None of the reagents named will dissolve the fatty molecules of a chyluria, while ether will cause the fluid to clear up completely. The PROGNOSIS is usually favorable. Very rarely is an attack fatal, and when such is the case it is from exhaustion--from the drain to which the system is subject. Tubercular phthisis is therefore a not infrequent immediate cause of death. TREATMENT.--On the supposition that filariæ are the essential cause of the disease, the rational indication would be first to destroy them by the introduction into the blood of some parasiticide; and, second, to repair the lesion of communication between the lymphatic system and the urinary passages. As yet no agent is known which would not be as fatal to the host as to the filaria, if used in sufficient quantity to destroy the latter; nor has it ever been possible to find the point of communication between the two systems, although treatment has been directed to producing closure of such communication, and with some show of success. Thus, in a case under his care Dickinson of London injected into the empty bladder twelve ounces of a solution of perchloride of iron, containing at first two drachms of the tincture to the whole quantity, gradually increased to four drachms. The solution was retained in the bladder for from eight to twelve minutes with little or no inconvenience. The operation was repeated almost daily for twelve days. The effect was always to check the milky flow and to substitute a clear urine. But after the operation had been repeated a certain number of times there was a decided rise of temperature, with headache, nausea, lumbar pain, hæmaturia, and albuminuria which continued a short {121} time after the hæmaturia ceased. Singularly, too, with the subsidence of these symptoms, the chyluria remained absent for some time. The injections were resumed on its return, and each time were followed by relief. In the course of their use, however, the strength of the solution was increased to an ounce of the perchloride to twelve ounces of water, and the strongest solutions were retained in the bladder for as much as an hour, the weaker longer. Ultimately, however, the use of the injections became so painful that they had to be discontinued.