SENSORIUM. Vertigo, occurring particularly in the forenoon, and in a hot room; accompanied by nausea ; it seems as though everything were turning around. The perceptive faculties are singularly affected. One cannot read, because the meaning of certain letters is not clear; errs in speaking, because he cannot get the right words ; this when talking about every-day matters ; whereas when the subject is very important, so as to call forth the most energy, the words are correctly chosen. Analogous to the state of mind in certain typhoid conditions. Generally it is difficult to collect and hold the thoughts.