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��INDEX OF AUTHORS' NAMES.
Faraday, 4, 7, 22, :i9, 110, 112,
��Helmholtz, 22, 116, 201, 205,207.
209, 212, 230, 233, 251, 255. Hittorf, 22, 119, 139, 141, 143, Hoff, van't, 30, 39, 42, 49, 55, 59,
60, 63, 71, 72, 80, 89, 92, 102,
KohlrauBch, 113, 117. 119, 129,
131, 132, 140, 141, 158, 159, Koppe, *^
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