Stone tools are fossilized human behavior.

Eloquent testimony to the recovery powers of wild animals frequently becomes apparent from the study of skeletons housed in museums.

I put a bullet into the back of the crocodiles neck just behind the head, thus killing it. If a crocodile is hit in any other part of its anatomy it disappears into the water and is irrecoverable.

Raising funds for my fourth expedition proved to be very difficult.

The Foxhall jaw has now been missing for many years.

The trip I made to Angola to study the prehistoric contents of the gravel beds as a means of deciding the age of the deposits and their economic potential was the first time prehistory had ever been used for such a purpose.

Sometimes string figures were used to illustrate stories, as in the case of an Eskimo example that depicts a man catching a salmon. Sometimes they had magic or religious significance.