Before the advent of the American, the medium of exchange between the Indian and the white man was pelts. Afterward it was silver coin. If an Indian received in the sale of a horse a fifty dollar gold piece, not an infrequent occurrence, the first thing he did was to exchange it for American half dollars. These he could count. He would then commence his purchases, paying for each article separately, as he got it. He would not trust any one to add up the bill and pay it all at once. At that day fifty dollar gold pieces, not the issue of the government, were common on the Pacific coast. They were called slugs.
The Indians, along the lower Columbia as far as the Cascades and on the lower Willamette, died off very fast during the year I spent in that section; for besides acquiring the vices of the white people they had acquired also their diseases. The measles and the small-pox were both amazingly fatal. In their wild state, before the appearance of the white man among them, the principal complaints they were subject to were those produced by long involuntary fasting, violent exercise in pursuit of game, and over-eating. Instinct more than reason had taught them a remedy for these ills. It was the steam bath. Something like a bake-oven was built, large enough to admit a man lying down.
Bushes were stuck in the ground in two rows, about six feet long and some two or three feet apart; other bushes connected the rows at one end. The tops of the bushes were drawn together to interlace, and confined in that position; the whole was then plastered over with wet clay until every opening was filled.
Just inside the open end of the oven the floor was scooped out so as to make a hole that would hold a bucket or two of water.
These ovens were always built on the banks of a stream, a big spring, or pool of water. When a patient required a bath, a fire was built near the oven and a pile of stones put upon it.
The cavity at the front was then filled with water. When the stones were sufficiently heated, the patient would draw himself into the oven; a blanket would be thrown over the open end, and hot stones put into the water until the patient could stand it no longer. He was then withdrawn from his steam bath and doused into the cold stream near by. This treatment may have answered with the early ailments of the Indians. With the measles or small-pox it would kill every time.
During my year on the Columbia River, the small-pox exterminated one small remnant of a band of Indians entirely, and reduced others materially. I do not think there was a case of recovery among them, until the doctor with the Hudson Bay Company took the matter in hand and established a hospital. Nearly every case he treated recovered. I never, myself, saw the treatment described in the preceding paragraph, but have heard it described by persons who have witnessed it. The decimation among the Indians I knew of personally, and the hospital, established for their benefit, was a Hudson's Bay building not a stone's throw from my own quarters.