Where do we find data concerning this remedy ? In the same source as the preceding. Are there any provings of this remedy ? None except a few made with the highest potencies which are generally regarded as unreliable, as they were not thorough. Recently, however, the drug has undergone a more thorough proving by Dr. George Royal, of Iowa University, and his class. What is the general application of this drug ? In troubles of the nervous system ; it corresponds to the condition known as neurasthenia, and is a restorative in muscular debility following acute diseases. What are the mental conditions calling for its use ? There is a gloomy, depressed, irritable mental state ; trifles annoy ; the patient looks on the dark side of everything ; there is a loss of memory, crossness and fretfulness in children. In what mental disease is it useful ? Melancholia and mania ; somnambulism states, or any state where there is mental aberration ; hallucinations and illusions, puerperal mania and delirium tremens. Give the typhoid symptoms of Kali phosphoricum. There is a dry tongue, brown in color, foul and putrid diarrhoea, great debility, low pulse, offensive breath, and sordes on the teeth ; there is also great mental depression, delirium, etc. Give indications for Kali phosphoricum in enuresis or wetting the bed. Where it is due to a paralytic or paretic condition of the bladder or from nervous debility, there is inability to retain the urine. What symptoms has Kali phosphoricum in the back ? There is rheumatic lameness of the back, which is worse after rest and on just commencing to move ; it is especially worse on rising from a sitting position ; there seems to be a paralytic tendency. What drug has the same symptoms ? Rhus tox .