Particularly they wanted to see the horse, the lion, and the elephant.

Taking a yam-stick as pointer, I would often draw roughly in the sand almost every animal in Nature.

But even when these rough designs were made for my admiring audience, I found it extremely difficult to convey an idea of the part in the economy of Nature which each creature played.

I would tell them, however, that the horse was used for fighting purposes and for travel; that the cow yielded food and drink, and that the dogs drew sledges.

It was absolutely necessary to dwell only on the utilitarian side of things.