History of Guernsey History of Guernsey The history of Guernsey stretches back to evidence of prehistoric habitation and settlement and encompasses the development of its modern society. Around 6000 BCE, rising sea created the English Channel and separated the Norman promontories that became the bailiwicks of Guernsey and Jersey from continental Europe. Neolithic farmers then settled on its coast and built the dolmens and menhirs found on the islands today. The island of Guernsey contains two sculpted menhirs of great archaeological interest, while the dolmen known as "L'Autel du Dehus" contains a dolmen deity known as "Le Gardien du Tombeau". The Roman occupation
History of water supply and sanitation was invented by Alexander Cummings in 1775 but became known as the U-bend following the introduction of the U-shaped trap by Thomas Crapper in 1880. The first screw-down water tap was patented in 1845 by Guest and Chrimes, a brass foundry in Rotherham. Founders of microscopy, Antonie van Leeuwenhoek and Robert Hooke, used the newly invented microscope to observe for the first time small material particles that were suspended in the water, laying the groundwork for the future understanding of waterborne pathogens and waterborne diseases. Sir Francis Bacon attempted to desalinate sea water by passing the flow through a sand