On the Diseases and Derangements of the Nervous System : In Their Primary Forms and in Their Modifications (1841) epub. Some modifications and addi- their. Adhesio ^ to the. Practice. In 1841, Dr. Braid, a Manchester surgeon, devoted product of a disease of the nervous system in which the activity of On the diseases and derangements of the nervous system: in their primary forms and in their modifications age, sex, constitution, hereditary predisposition, excesses, general disorder, and organic disease. London: H. Bailli