Diphtheria is a potentially fatal, contagious disease that usually involves the nose, throat, and air passages but may also infect the skin. Its most striking feature is the formation of a grayish membrane covering the tonsils and upper part of the throat.
Pure Food and Drug Act: A Muckraking Triumph. The first Pure Food and Drug Act was passed in 1906. The purpose was to protect the public against adulteration of food and from products identified as healthful without scientific support. The original Pure Food and Drug Act was amended in 1912, 1913, and 1923. A greater extension of its scope took place in 1933.
The division of consumables into services is a simplification: these are not discrete categories. Most business theorists see a continuum with pure service at one endpoint and pure commodity goods at the other. Most products fall between these two extremes. For example, a restaurant provides a physical good (prepared food), but also provides services in the form of ambience, the setting and clearing of the table, etc.