[Cambridge: the author; Rumford Press, 1861;1869]. Octavo-sized booklet (21 x13 cm.), 47 pages. Illustrated. The Second Printing of Horsford's important work on leavening with phosphoric acid/bicarbonate of soda, and the First Edition to add the first English translation of Liebig's New Method of Making Bread which had been published in January of the same year in Germany. Eben Norton Horsford (1818-1893) was Rumford Professor at Harvard University. Instead of yeast.....