Avoid bad odours.
Do not ride in an open carriage at night.
Take lunch in the middle of the day. This is essential. It is better
to take a light breakfast and lunch, than a heavy breakfast and no
lunch.
No city in the world is so well supplied with good drinking water as
Rome. The best is the Trevi water. Do _not_ drink Aqua Marcia; it is
too cold.
If out about sunset, throw an extra wrap or coat on, to avoid the
sudden change in the atmosphere. There is no danger beyond being apt
to take a cold. Colds are the root of all evil at Rome.
Do not sit about the ruins at night. It may be very romantic, but it
is very unwise. There is no harm in walking.
Close your windows at night.
If you get into a heat, do not go into the shade or into a building
till you have cooled down.
Do not over-fatigue yourself.
Follow these hints, and you will avoid that great bugbear, Roman
fever.
"A hint on the spot is worth a cart-load of
recollections."--GRAY.