Quackery is the promotion of unproven or fraudulent medical practices. Random House Dictionary describes a "quack" as a "fraudulent or ignorant pretender to medical skill" or "a person who pretends, professionally or publicly, to have skill, knowledge, or qualifications he or she does not possess; a charlatan". Entitled: "Der Chinesische Quacksalber." Image taken from page 415 of China, historisch romantisch, malerisch (historically romantic, picturesque). A translation by Thomas Allom with historical and descriptive notes by the Rev. G. N. Wright, published 1843.