...steam or sail-vessels should not be largely indulged in, because the slightest motion of the page or your body alters the focal point, and requires a painful...at the sun while shining unless through a colored gloss of «ome kind : even a very bright moon should not be long gazed at. The glare of the sun on...

...steam or sail vessels should not be largely indulged in, because the slightest motion of the page or your body alters the focal point, and requires a painful,...it. Never attempt to look at the sun while shining except through a coloured glass of some kind. Even a very bright moon should not be long gazed at....

...which, with others in this article, are approved by an experienced and learned physician. Never attsript to look at the sun while shining, unless through a...bright light and darkness is always pernicious. In locking at minute objects, relieve the eyes frequently l>y turning them to something in the distance....

...steam or sail vessels should not be largely indulged in, because the slightest motion of the page or your body alters the focal point, and requires a painful...effort to readjust it. Never attempt to look at the sun when shining unless through a colored glass of some kind ; even a very bright moon should not be gazed...