Subject of the Volume

The subject of the present volume, in essence, is the hand and hand's extensions.

Evolution of the Hand

We cannot insist too strongly that in the evolution of life the "decisive moment" arrived when a living being – who became man – adopted the erect attitude, thus freeing his hands, and when the industrious activity was inaugurated which this freedom made possible.

Significance of the Hand

In the use of the hand as an instrument, we have the manifestation of an important physical progress and the promise of further progress.