Ira Paine, Doctor Carver, and others have been seen in their marvelous performances by many people of the present generation.

The records made by many of the competitors of the modern army-shooting matches are none the less wonderful, exemplifying as they do the degree of precision that the eye may attain and the control which may be developed over the nerves and muscles.

The authors know of a countryman who successfully hunted squirrels and small game by means of pebbles thrown with his hand.
Physiologic wonders are to be found in all our modern sports and games.
In billiards, base-ball, cricket, tennis, etc., there are experts who are really physiologic curiosities.

In the trades and arts we see development of the special senses that is little less than marvelous.
It is said that there are workmen in Krupp's gun factory in Germany who have such control over the enormous trip hammers that they can place a watch under one and let the hammer fall, stopping it with unerring precision just on the crystal.

An expert tool juggler in one of the great English needle factories, in a recent test of skill, performed one of the most delicate mechanical feats imaginable.