harmful to the kidneys.

~4. Importance of Keeping the Skin Clean.~--The work of the kidneys is
very similar to that of the skin; and when the skin does not do its full
duty, the kidneys have to do more than they should, and hence are likely
to become diseased. For this reason, persons who allow their skins to
become inactive by neglecting to bathe frequently are apt to have
disease of the kidneys.

~5. Effects of Alcohol and Tobacco upon the Kidneys.~--A piece of beef
placed in alcohol soon becomes dry and hard, and shrivels up as though
it had been burned. The effect upon the kidneys of drinking strong
liquor is almost the same. Beer and hard cider also do the kidneys harm,
sometimes producing incurable disease of these important organs.


SUMMARY.

1. The kidneys somewhat resemble the skin in their structure and in
their work.

2. The kidneys remove from the blood some poisonous substances.

3. To keep the kidneys healthy we should drink plenty of water, avoid
irritating foods and drinks, and keep the skin in health by proper
bathing.

4. The drinking of strong liquors often causes incurable disease of the
kidneys.