We must find a little space for striking clocks. The simplest is one blow at each hour just to draw attention to the clock. Striking the hours and also one blow at each half hour as well as the quarter double blow, called "ting tong" quarters, are too well known to need description. The next stage after this is "chiming quarters" with three or more musical gongs, or bells. One of the best strikers I have has three trains, three weights and four bells. It strikes the hour on a large bell and two minutes after the hour it strikes it again, so as to give you another chance to count correctly. At the first quarter it repeats the last hour followed by a musical chord of three bells, which we will call _one triple blow_: at the second quarter the hour again and two triple blows and at the third quarter, the hour again and three triple blows. Suppose a sample hour's striking from four o'clock, this is what you hear, and there can be no mistake. "Four" and in two minutes "four"--"four and one quarter"--"four and two quarters"--"four and three quarters," and the same for all other hours. This is definite, for the clock proclaims the hour, or the hour and so much past. It can be set silent, but that only stops it from striking automatically, and whether so set or not, it will repeat by pulling a cord. You awake in the night and pull the cord, and then in mellow musical tones, almost as if the clock were speaking, you hear--"four and two quarters." This I consider a perfect striking clock. It is a large movement of fine workmanship and was made in the department of the Jura, France. When a clock or watch only repeats, I consider the old "five-minute repeater" the best. I used this method in a clock which, on pulling the cord, strikes the hour on a large bell and if that is all it strikes, then it is less than five minutes past. If more than five minutes past it follows the hour by one blow on a small bell for every five minutes. This gives the time within five minutes. It is fully described and illustrated in "Machinery," New York, for March, 1905. Just one more. An old Dutch clock which I restored strikes the hour on a large bell; at the first quarter it strikes one blow on a small bell; at the half hour it strikes the last hour over again on the small bell; at the third quarter it strikes one blow on the large bell. But this in spite of its great ingenuity, only gives definite information at the hour and half hour. [Illustration: Fig. 43--Hebrew Numerals] [Illustration: Fig. 44--24-Hour Watch]