Choking alone (without back blows) to assist a choking victim, is referred to as "The Heimlich Maneuver." The purpose of abdominal thrusts is to create pressure that will expel any object lodged in the airway upwards to relive the obstruction. The Heimlich Maneuver specifically excludes back blows; its inventor, Dr. Henry Heimlich, believed that back blows were likely to cause an airway obstruction to become more deeply lodged in the victim's airway. So, while abdominal thrusts are part of other choking victim protocols, the Heimlich Maneuver uses only abdominal thrusts to attempt to dislodge airway obstructions. The American Red Cross recommends
Henry Dewar (physician) friend of the Newcastle physician John Clark, and Trotter's criticism of Clark has been given as one possible reason for the personal attacks included with the scientific and practical arguments Dewar gave. A scale or chemical slide rule mentioned by Thomas Charles Hope as "Dr. Dewar's" has been considered to be unpublished work of Henry Dewar. "An inquiry into the principles by which the importance of foreign commerce ought to be estimated" (1808) was an economic pamphlet. It was taken to be a comment on the Continental System, and a reply to William Spence. Spence's "Britain Independent of Commerce" (1807)