Valetudinarians, or men of a certain age, who travel into the southern
parts of France, Spain, or Italy, should never omit to wear either a
callico or fine flannel waistcoat under their shirts: strange as it may
seem to say so, this precaution is more necessary in the south of
France, than in England. In May last it was so hot at _Lyons_, on the
side of the streets the sun shone on, and so cold on the shady side,
that both were intolerable. The air is much more _vif_ and penetrating
in hot climates, than in cold. A dead dog, thrown into the streets of
Madrid at night, will not have a bit of flesh upon his bones after it
has been exposed to that keen air twenty-four hours.