Figure 19 shows a very fine clock in which the dial is stationary and
the hand moves just as on our dials. This hour hand corresponds to
the single hand of the old Dutch clocks. When the Japanese reached
the point of considering the application of minute and second hands
to their clocks they found that these refinements would not fit their
old method and they were compelled to lay aside their clocks and
take ours. On this dial, Fig. 19, nine is noon, as usual, and is on
top side of dial. Hand points to three quarters past _seven_, that
is, a quarter to _six_, near sunset. Between the bell and the top of
the clock body two horizontal balances, having small weights hung on
them, are plainly shown, and the clock has two verge escapements--one
connected with each balance, or "foliot." Let us suppose a long
day coming to a close at sunset, just as the hand indicates. The
upper balance, which is the slow one, has been swinging backwards
and forwards measuring the long hours of the day. When the clock
strikes six, at sunset, the top balance is thrown out of action and
the lower one, which is the fast one, is thrown into action and
measures the short night hours. At sunrise this is thrown out and
the top one in again to measure the next day's long hours. As the
days vary in length, the balances, or foliots, can be made to swing
faster or slower by moving the weights inwards or outwards a notch
or two. The balance with small weights for regulation is the oldest
known and was used in connection with the verge escapement, just
as in this clock, by the Dutch about 1364. All the evidence I can
find indicates that the Japanese clocks are later than this date. In
design, ornamentation and methods for marking varying days, however,
the Japanese have shown great artistic taste and inventiveness.
It is seen that this dial in addition to the usual six hours,
twice over, has on the outside circle of dial, the "twelve horary
branches" called by the Japanese the "twelve honorary branches," thus
indicating the whole day of twelve Japanese hours, six of them for
day and six for night. By this means they avoided repeating the same
hours for day and night. When it is pointed out that these "twelve
horary branches" are very old Chinese, we are not in a position to
boast about our twenty-four hour system, because these branches
indicate positively whether any given hour is day or night. When we
print a time table in the twenty-four hour system so as to get rid
of our clumsy A. M. and P. M., we are thousands of years behind the
Chinese. More than that, for they got the matter right without any
such pressure as our close running trains have brought to bear on
us. These branches have one syllable names and the "ten celestial
stems" have also one syllable names, all as shown on Fig. 20. Refer
now to Fig. 21 where two disks are shown, one having the "twelve
horary branches" and the other the "ten celestial stems." These disks
Public-domain text, read in full here on John Shaqi.
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