Fig. 1.<unk> . The handles pointing away from the holder are insulated so that the physician can safely place the device in contact with any part of the patient's body. The<unk><unk> , or in full as it was sold the<unk>  hydro-electric<unk> , was a type of voltaic battery sold in the second half of the 19th century for medical applications. Its chief market was amongst the numerous quack practitioners who were taking advantage of the popularity of the relatively new treatment of electrotherapy, or "electrification" as it was then known. Its unique selling point was its construction of numerous linked cells, rendering it mechanically flexible. A variant intended to be worn wrapped on parts of the body for long periods was known as<unk> 's galvanic<unk>  or electric belt. The<unk>  Company attracted a great deal of antagonism from the medical community due to their use of the names of well-known physicians in their advertising without permission. The nature of their business; in selling to charlatans and promoting quack practices also made them unpopular with the medical community. Despite this, the<unk><unk>  was widely reported as a useful source of electricity for medical and scientific purposes, even amongst the most vocal critics of the<unk>  Company.
Pulvermacher's chain
Pimenta's point
Ghon's complex
Langer's lines
Klein's line
Blaschko's lines
Bowman's capsule
McBurney's point