In mild cases of ringworm, there may be just a few broken hairs, while bad cases of ringworm can spread over most of a dogâs body. Itâs also possible for a dog to carry the fungus and not show any symptoms whatsoever. Which Dogs Are Prone to Ringworm Infection?
Jigsaw puzzles were originally created by painting a picture on a flat, rectangular piece of wood, and then cutting that picture into small pieces with a jigsaw, hence the name. John Spilsbury, a London cartographer and engraver, is credited with commercializing jigsaw puzzles around 1760.
The Origin of Jigsaw Puzzles. The first jigsaw puzzle was believed to be constructed around 1760 by British mapmaker John Spilbury. Spilbury took one of his world maps, pasted it to a sheet of hardwood and cut around the borders of the countries with a fine-bladed saw. The result was a useful visual aid to help children learn world geography.