New International Dictionary, 1914).

The hour was further divided, also by the Babylonians, into periods of sixty minutes. It was the Babylonians who first divided the circle into 360 degrees, and Ptolemy followed this division.

The dial of a clock was at first termed the hour-plate, as only hours were engraved upon it and only one hand was employed. Later, another hand was added, the minute hand, which travelled a complete circuit while the hour hand was travelling between two hour numerals. Later, again, a new sub-dial was added, and a seconds hand recorded the sixty seconds which made the minute. The term "second" was at first called "second-minute," denoting that it was the second division of an hour by sixty. The learned John Wilkins, Bishop of Chester, that extraordinary old savant, writes in 1650: "Four flames of an equal magnitude will be kept alive the space of sixteen second-minutes, though one of these flames alone, in the same vessel, will not last at most above twenty-five or thirty seconds."

These dry facts may serve to whet the curiosity of the student in regard to the measurement of time and its origin. They add a piquancy to the clock dial as we now know it. Scientific it is, as one of man's most exact recorders of natural phenomena. That an exact timekeeper should be found in the pocket of every schoolboy would seem an astounding miracle to our ancestors two hundred years ago, or even less than a hundred years ago: