Assuming that that is the best glue which will take up most water, take 50 grains of the specimen and dissolve it in 3 ozs. water in a water-bath. When dissolved, set it by for 12 hours to gelatinize, and then take an ounce chip-box, place it on the surface of the gelatine, and put shot into the box until it sinks down to a mark on the outside. It will be found that the stronger the glut-, the more shot it will take to sink the box down so that the mark shall be level with the surface of the gelatine. In a trial with very fine glue, 50 grains of glue dissolved and gelatinized with 3 ozs. of water, supported to the mark on the box 6 ozs. of shot, at a temperature of 58° Fahr. On trying the same experiment with best Russian isinglass, 9 ozs. of shot were supported, the temperature being the same. This test is of course intended as a comparative one between two kinds of glue, or between any kind taken as a standard and another compared with it. The placing of the mark is arbitrary.