This did, however, not interfere with the use of the calk in
the colder south Germany, where after a use of nearly 1,500 years it
has maintained its local and climatic adaptation. Notwithstanding the
occasional aping by foreigners, it has remained victorious in its
original form, and has been chosen in many countries.
The historical development of the horseshoe in general, from about the
time of Emperor Maximilian until the seven years war, furnishes a true
picture of the confused condition of things at that period of time,
which, to make intelligible, would require a separate and complete
treatise. Interesting as it is to the scientist to follow up this
development and mode of present German horseshoeing, which, aside from
the national toe and calk, is the English form and has become
influential, and with full right, for a periodical of this kind
further, more comprehensive, statement would under all circumstances
take up too much room; therefore I must drop the pen, although
reluctantly.
[Illustration: FIG. 23.]
* * * * *
SHEET GLASS FROM MOLTEN METAL.
The present practice in making metal sheets is to cast ingots or slabs
and then reduce these by repeated rollings and reheating.
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