Abbreviations and Signs (Illustrated)

The use of abbreviations and signs is often a convenience and sometimes a temptation. It is a saving of time and labor which is entirely justifiable under certain conditions, one of which is that all such short cuts should be sufficiently conventional and familiar to be intelligible to any person likely to read the printed matter in which they occur. Scientific and technical signs and abbreviations are part of the nomenclature of the subject to which they belong and must be learned by stude...