I

Glue............. 3.5 ounces

Glycerine......... 8 ounces

Water, a sufficient quantity. Pour upon the glue more than enough water to cover it and let stand for several hours, then decant the greater portion of the water; apply heat until the glue is dissolved, and add the glycerine. If the mixture is too thick, add more water.

II

Glue............. 6 ounces

Alum............. 30 grains

Acetic acid........ 0.5 ounce

Alcohol........... 1.5 ounces

Water............ 6$ ounces

Mix all but the alcohol, digest on a water bath till the glue is dissolved, allow to cool and add the alcohol.

III

Glue............. 5 ounces

Water............ 1 ounce

Calcium chloride. .. 1 ounce.

Dissolve the calcium chloride in the water, add the glue, macerate until it is thoroughly softened, and then apply heat until completely dissolved.

IV

Glue, 1 pound; glycerine, 4 ounces; glucose syrup, 2 tablespoonfuls; tannin, 1/10 ounce. Use warm, and give an hour to dry and set on the pads. This can be colored with any aniline dye.