The Cure of Writers' Cramp and the Arm Troubles of Telegraphers and Ball Players. E-book. Formato PDF Samuel Howard Monell   -  Forgotten Books, 2017  - 

Not every case of arm trouble advances to the stage of actual cramp; but when work becomes unnaturally difficult in any degree, regardless of the symptoms, prompt attention Should be given to the matter of restor ing the normal state; for not only may a stitch in time save nine, but an ounce of prevention of telegraphers' paralysis is worth far more than a pound of cure.