Repeat the maceration, and, in like manner, draw a third portion of 3 fluid ounces. Lastly, mix the 3 percolates. The surface of the powder must be constantly covered with alcohol from the commencement, and until the end of the process of percolation. Fluid extract of eucalyptus is dark brownish-green, or green, in color, and possesses the taste and odor of the leaves, and, as thus prepared, represents very nearly the quality of drug employed, troy ounce to each fluid ounce of the finished extract. In our experience this preparation should be made with alcohol.
Water is injurious in proportion to the amount present.
We, therefore, supplement the above with a formula long established in our hands and published in the supplement to the last edition of this Dispensatory.