Dick drew a long breath of satisfaction. Providence had treated them well. Then he called loudly for his share of the bird, saying that he was starving, and in a few moments both fell to work.
Their fur operations continued to extend. They had really found a pocket, and isolated corner in the high Rockies where the fur-bearing animals, not only abundant, were also increasing. It was, too, the dead of winter, the very best time for trapping, and so, as far as their own goings and comings were concerned, they were favored further by the lucky and unusual absence of snow. They increased the number of their traps—dead falls, box traps, snares, and other kinds, and most of them were successful.
They knew instinctively the quality of the furs that they obtained. They could tell at a glance whether they were prime, that is, thick and full, and as they cured them and baled them, they classified them.
Constant application bred new ideas. In their pursuit of furs, they found that they were not quite so sparing of the game as they had been at first. Some of their scruples melted away. Albert now recalled a device of trappers of which he had read. This was the use of a substance generally called barkstone, which they found to be of great help to them in the capture of that animal.
The barkstone or castoreum, as it is commercially known, was obtained principally from the beaver himself. The basis of it was an acrid secretion with a musky odor of great power, found in two glands just under the root of the beaver's tail. Each gland was from one and one half to two inches in length. The boys cut out these glands and squeezed the contents into an empty tin can. This at first was of a yellowish-red color, but after a while, when it dried, it became a light brown.
This substance formed the main ingredient of barkstone, and in their medicine chest they found a part of the remainder. The secretion was transferred to a bottle and the mixed with it essence of peppermint and ground cinnamon. As Albert remembered it, ground nutmeg also was needed, but as they had no nutmeg they were compelled to take their chances without it. Then they poured whisky on the compound until it looked like a paste.
Then the bottle was stopped up with the greatest care, and in about a week, when they stole a sniff or two at it, they found that the odor had increased ten or a dozen times in power.
They put eight or ten drops of the barkstone upon the bait for the beaver, or somewhere near the trap, and, despite some defects in the composition, it proved an extraordinary success. The wariest beaver of all would be drawn by it, and their beaver bales grew faster than any other.
Dick calculated one day that they had at least five thousand dollars worth of furs, which seemed a great sum to both boys. It certainly meant, at that time and in that region, a competence, and it could be increased greatly.
"Of course," said Dick, "we'll have to think some day of the way in which we must get these furs out, and for that we will need horses or mules, but we won't bother our heads about it yet."