150 feet. When you have told that
to a Westerner, you don't need to tell anything else. It means burros
for pack animals. In the Southwest it means forests of huge yellow
pines, open upland like a park, warm, clear days, cool nights, and
though in the desert, none of the heat nor the dust of the desert.

It is the ideal land for tuberculosis, though all invalids should be
examined as to heart action before attempting any altitude over 4,000
feet. And the Southwest has worked out an ideal system of treatment for
tuberculosis patients. They are no longer housed in stuffy hotels and
air tight, super-heated sanitariums. Each sanitarium is now a tent
city--portable houses or tents floored and boarded halfway up, with the
upper half of the wall a curtain window, and a little stove in each
tent. Each patient has, if he wants it, a little hospital all to
himself. There is a central dining-room. There is also a dispensary. In
some cases, there are church and amusement hall. Where means permit it,
a family may have a little tent city all to itself; and they don't call
the tent city a sanitarium. They call it "Sun Mount," or "Happy Canyon,"
or some other such name. The percentage of recoveries is wonderful; but
the point is, the invalids must come in time. Wherever you go along the
borders of Old and New Mexico searching for prehistoric ruins, you come
on these tent cities.

[Illustration: The Enchanted Mesa of Acoma, as high as three Niagaras,
and its top as flat as a billiard table]

Where can one see these cliff and cave dwellings of a prehistoric dwarf?
Please note the points. Cliff and cave dwellings are not the same. Cliff
dwellings are houses made by building up the front of a natural arch.
This front wall was either in stone or sun-baked adobe. Cave dwellings
are houses hollowed out of the solid rock, a feat not so difficult as it
sounds when you consider the rock is only soft pumice or tufa, that
yields to scraping more readily than bath brick or soft lime. The cliff
dwellings are usually only one story. The cave dwellings may run five
stories up inside the rock, natural stone steps leading from tier to
tier of the rooms, and tiny porthole windows looking down precipices 500
to 1,000 feet. The cliff dwellings are mostly entered by narrow trails
leading along the ledge of a precipice sheer as a wall. The first story
of the cave dwellings was entered by a light ladder, which the owner
could draw up after him. Remember it