This was a translation and adaptation for the British market of Mohr's Lehrbuch der pharmaceutischen Technik, also published in 1849. It is thus the first textbook of pharmacy in English.

Though Redwood made it clear in the preface that this was an adapted translation from the German, the publisher appears to have found it expedient to "Anglicize Karl Friedrich Mohr's name to Francis Mohr.

Digital facsimile from the Hathi Trust at this link.