CHAPTER X.

ISINGLASS AND ITS SUBSTITUTES.

Sources of isinglass; Properties of a good quality of isinglass; Imitations of isinglass and their detection; Adulteration of isinglass and its detection 196

Russian isinglass; Siberian purse isinglass; Preparation of isinglass in Russia 197

North American or New York isinglass 198

East India isinglass; Hudson Bay isinglass; Brazilian isinglass 199

German isinglass; Isinglass from the scales of shad and herring; Bleaching inferior qualities of isinglass; Ichthycolle Française 200

Isinglassine; Chinese isinglass 201

Irish moss; Fish glue; Jennings’ process for the preparation of fish glue 203

Treatment of fish scales; Production of fish glue on the Norwegian coast; Substitute for isinglass according to C. A. Sahlström’s process 203

Whale glue 204