Slate (writing) Slate (writing) A slate is a thin piece of hard flat material, such as the rock also called slate, that is used as a medium for writing. The rock is “a metamorphic rock created by the recrystallization of the minerals in shale from clay to parallel-aligned, flat, flake-like minerals such as mica”. The writing slate consisted of a piece of slate, typically either 4x6 inches or 7x10 inches, encased in a wooden frame. A precise date range for writing slates of this type has not been established. Usually, a piece of cloth or slate sponge was used to clean it
Name change changed because these documents are "matters of fact", which means that they were correct at the time they were issued. Documentary evidence of a change of name can be in a number of forms, such as a marriage certificate, decree absolute, civil partnership certificate, statutory declaration or deed of change of name. Such documents are mere evidence that a change of name has occurred, however, and they do not themselves operate to change a person's name. Deeds of change of name are by far the most commonly used method of providing evidence of a change of name other than changing