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Updated: June 27, 2025


"In our first crop of skins we laid by, at least 450 pounds worth, with more than 50 pounds worth of `castoreum. In our second year we were enabled to do still better; and the produce of that season we estimate at 1000 pounds. Wanting a place to dry and store our furs, we built a new log-cabin, which is the one we are now living in. The old one became our store-house.

One of the most extraordinary characteristics of the beaver is, that it secretes from certain glands a peculiar odoriferous substance called "castoreum," or "bark-stone" by the trappers. So strangely are the beavers attracted by this substance, that sniffing it up with their nostrils, they will hurry towards it to enjoy the scent. It is consequently the bait used by trappers.

It is impossible fully to understand how this remarkable animal does its work, for as it never toils in the day time, it is out of the power of any one to watch its method. The peculiar odoriferous substance, secreted in two glandular sacs near the root of the tail, is "castoreum," more generally known as "bark stone" among the trappers.

I haven't time to tell you of all the different ways in which he set his traps, nor can we stop to talk of the various baits that he used, from castoreum to fresh sticks of birch or willow, or of those other traps, still more artfully arranged, which had no bait at all, but were cunningly hidden where the poor beavers would be almost certain to step into them before they saw them.

Six weeks after the above adventure my father was attacked with an abscess in the head which carried him off in a week. Dr. Zambelli first gave him oppilative remedies, and, seeing his mistake, he tried to mend it by administering castoreum, which sent his patient into convulsions and killed him.

It is all very well that the physician should know that castor oil comes from a plant, and castoreum from an animal, and how they are to be prepared; but for all the practical purposes of his profession that knowledge is not of one whit more value, has no more relevancy, than the knowledge of how the steel of his scalpel is made. All knowledge is good.

Morality, supposed to be founded in selfishness; test of, the general welfare of the community; gradual rise of; influence of a high standard of. Morgan, L.H., on the beaver; on the reasoning powers of the beaver; on the forcible capture of wives; on the castoreum of the beaver; marriage unknown in primeval times; on polyandry. Morley, J., on the appreciation of praise and fear of blame.

Dead-falls of large size will be found to work successfully, baiting with the body of some small animal, such as a rat or squirrel. A piece of cat, beaver or muskrat flesh is also excellent, and by slightly scenting with castoreum success will be made sure. Several of these traps may be set at intervals, and a trail made by dragging a piece of smoked beaver meat between them.

These glands are about two inches in length. They are cut out and the contents are squeezed into a small bottle. When fresh the substance is of a yellowish-red color, changing to a light-brown when dried. Both male and female animals yield the castoreum, but that of the male is generally considered the best.

After a time, the former beavers go through the same process; and this is continued until a mound of three or four feet in height has been raised. It is difficult to account for the object of this strange proceeding. It was not, however, till of late years that the sagacious Indians discovered that the castoreum was a certain bait for the animals themselves.

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