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To Prepare Collodion

Mix 21 fluid ounces stronger ether with 6 fluid ounces stronger alcohol in a suitable bottle, add the quantity of moist prepared cotton (as prepared in the preceding receipt), and shake occasionally until dissolved. more readily rubbed down with aqueous solutions, and contains all the active ingredients of the root; but, however carefully prepared, change of temperature is liable to separate the resin more or less from the extract. 4751. Procter's Alcoholic Extract of Arnica. Take arnica flowers, 12 ounces, troy; alcohol, 3 pints; water, 1 pint. Mix the alcohol and water, and pour 2 pints of the