We are at the very height of the summer season; the lovers of sea and sun grow steadily in number, and are exposed every day to harms... and dangers, from sun-burn — so what should we know about it??... Here, dear reader, is this precise scientific study, analyzing how the skin burns, and the ways of treating it...

The "ultraviolet" rays, it appears, have a great effect on man — great in their benefit and in their harm.

Scientists have found that expo-sure to those rays for a short period gives the body a valuable benefit, while excessive exposure leads to the opposite, producing burns on the body exactly like the burns of fire; such burns are usually painful, and may be dangerous.

What, then, is the reason for the effect of ultraviolet rays on the human body?

The reason, in the opinion of the scientists, goes back to the skin

and its composition; for human skin is made up

A subject that concerns everyone who goes out in the sun, or in the fields, or on the banks of rivers and the sea beaches — indeed everyone who is exposed to the sun in this blazing season.

Few are those who have not expe-rienced the burning of the sun, and what befalls the skin and the head as a result of it — grinding pain, and troublesome discomfort from excessive exposure to the sun; and most of us have heard of sunstroke, which can sometimes be fatal. What, then, is that harm-ful element in the light of the sun?

Scientists have analyzed the sun's ray and found it composed of threads differing in length and in their effect on the earth generally, and on plant and animal in par-