The Complete Works in Philosophy, Politics and Morals of the late Dr. Benjamin Franklin, Vol. 2 [of 3]

By Benjamin Franklin

Page 68

and while they supply
matter for keeping up that sweat, by drinking frequently of a thin
evaporable liquor, water mixed with rum; but if the sweat stops,
they drop, and sometimes die suddenly, if a sweating is not again
brought on by drinking that liquor, or, as some rather chuse in that
case, a kind of hot punch, made with water, mixed with honey, and a
considerable proportion of vinegar? May there not be in negroes a
quicker evaporation of the perspirable matter from their skins and
lungs, which, by cooling them more, enables them to bear the sun's
heat better than whites do? (if that is a fact, as it is said to be;
for the alledged necessity of having negroes rather than whites, to
work in the West-India fields, is founded upon it) though the colour
of their skins would otherwise make them more sensible of the sun's
heat, since black cloth heats much sooner, and more, in the sun,
than white cloth. I am persuaded, from several instances happening
within my knowledge, that they do not bear cold weather so well as
the whites; they will perish when exposed to a less degree of it,
and are more apt to have their limbs frostbitten; and may not this
be from the same cause? Would not the earth grow much hotter under
the summer-sun, if a constant evaporation from its surface, greater
as the sun shines stronger, did not, by tending to cool it; balance,
in some degree, the warmer effects of the sun's rays? Is it not
owing to the constant evaporation from the surface of every leaf,
that trees, though shone on by the sun, are always, even the leaves
themselves, cool to our sense? at least much cooler than they would
otherwise be? May it not be owing to this, that fanning ourselves
when warm, does really cool us, though the air is itself warm that we
drive with the fan upon our faces; for the atmosphere round, and next
to our bodies, having imbibed as much of the perspired vapour as it
can well contain, receives no more, and the evaporation is therefore
checked and retarded, till we drive away that atmosphere, and bring
drier air in its place, that will receive the vapour, and thereby
facilitate and increase the evaporation? Certain it is, that mere
blowing of air on a dry body does not cool it, as any one may satisfy
himself, by blowing with a bellows on the dry ball of a thermometer;
the mercury will not fall; if it moves at all, it rather rises, as

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Text Comparison with Franklin's Way to Wealth; or, "Poor Richard Improved"

Page 0
Franklin, wishing to collect into one piece all the sayings upon the following subjects, which he had dropped in the course of publishing the Almanacks called "Poor Richard," introduces Father Abraham for this purpose.
Page 1
& T.
Page 2
Judge, then, how much I must have been gratified by an incident I am going to relate to you.
Page 3
--How much more than is necessary do we spend in sleep! forgetting that, "the sleeping fox catches no poultry, and that there will be sleeping enough in the grave," as Poor Richard says.
Page 4
Darton, Junr.
Page 5
'So much for industry, my friends, and attention to one's own business; but to these we must add frugality, if we would make our industry more certainly successful.
Page 6
got together to this sale of fineries and nick-nacks.
Page 7
" It is, however, a folly soon punished: for, as Poor Richard says, "Pride that dines on vanity, sups on contempt;--Pride breakfasted with Plenty, dined with Poverty and supped with Infamy.
Page 8
[Illustration] 'And now to conclude, "Experience keeps a dear school, but fools will learn in no other," as Poor Richard says, and scarce in that; for it is true, "We may give advice, but we cannot give conduct.
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and T.