102 So.2d 691 INSURANCE DEPARTMENT OF MISSISSIPPI, et al. v. DINSMORE No. 40790.Supreme Court of Mississippi. May 19, 1958. 1. Workmen’s compensation — pre-existing disease or infirmity — mental and emotional strain of employee’s work aggravating employee’s pre-existing hypertension. Where mental and emotional strain of employee’s work aggravated employee’s pre-existing hypertension and such aggravation was […]