OCR Text |
Show MUCH GOOD IN HEARTY LAUGH It Promotes the Circulation of Blood In the Carotid Arteries and Con-tracts Con-tracts the Muscles. A Iliitlsh scientist who has been making a study of laughter has prepared pre-pared a list of things that happen when a person gives away to autltbls laughter. On each side of the throat, be explains, there is an artery called call-ed the carotid. At the level of the larynx this divides; one branch, which carries blood to the brain. Is railed the Internal;" the other, which per-forma per-forma the duty of distributing blood to the face, Is called the "external." These two branches are Joined by the ophthalmic artery at about the level of the eyea. forming between the eyee a sort of canal. All this In turn brings the team of laughter and makes literal the exclamation, ex-clamation, "He laughed until ha cried." It Is this communication that la the cause of the close connection between the brain and the tear glands, and really acta the same lu grief as In laughter, there being but Utile difference dif-ference In the physical results between be-tween Joy and sorrow. Jn reality laughter Is not an easy thing. It results in a great, although Involuntary, effort an effort as great as though one were lifting a great weight and In both casea tbe muscles of both the throat and stomach contract. con-tract. Now, when laughter Is very hearty, when It ta actually excessive, the whole body la convulsed, and tbls means that every muscle Is contra? dUHe I where rP' ""OkM tt with laughter. Whether it is laughter laugh-ter or crying, the same thing happens, hap-pens, If It Is an excessive emotion that Is, the blood -congests the tear glands, and these glands overflow, forcing out tbe tears. |