Scientific American 26, 24.12.1859
Messrs. Editors: - While reading an article on tanning (on page 384, present volume of the Scientific American), it appeared to me that the opinion expressed regarding the operation being purely chemical might be strengthened by an observation of the curious effect produced by electricity upon hides while in the "bait." If, during this part of the process, a thunderstrom occurs, the leather produced is incariably inferior in quality. The nature of the injury thus received is such that no eye can detect it; but when made up and put to use, the leather appears to want tenacity, and "gives out" prematurely. I will not undertake to say how the deterioration is produced; but it seems to me that if, while the hides and tannin are in process of combination, the simple presence of electricity in the surrounding atmosphere is capable of affecting the resultant product so seriously, the operation thus interfered with must be chemical and not mechanical.
A. F. O.
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