Fig. 282. Preparation of tar.
This image is from 5. Pix liquida and Pix solida.—Tar and Pitch in Pereira's Elements of Materia Medica and Therapeutics, 1854.
This image is from 5. Pix liquida and Pix solida.—Tar and Pitch in Pereira's Elements of Materia Medica and Therapeutics, 1854.