Krauss 1 reviews eleven cases of cyst of the spinal canal. Of these only one, that of Spiller 2 appears to be identical with the one herewith reported. Spiller 3 says: "A collection of clear fluid in a cyst of the spinal pia arachnoid is a condition little known in America, as only one case occurring in this country is on record (Spiller, Musser and Martin), and only a few are found in the German literature. So far the French and English journals contain no examples." History. —Miss M., a patient of Dr. Willis Hall of this city, aged about 50, was well and always very active up to August, 1905. In jumping from a rapidly moving buggy she fell heavily on the left buttock. The left ankle was broken. The hip continued to hurt after the ankle healed, and since the accident she has suffered from a "shifting neuralgia."