Guernsey Post by Guernsey Post. Current Guernsey issues in August 2016 are: Current Alderney issues in August 2016 are: Next Alderney issues in September 2016 are: Guernsey Post Guernsey Post is the postal service for the island of Guernsey, Channel Islands. It includes a Philatelic bureau, and regularly issues both definitive and commemorative stamps. It also provides postal services for Sark. In contrast to the United Kingdom, Guernsey Post pillar boxes can be identified by their distinctive blue colour. The first pillar boxes in Britain were introduced in the Channel Islands as an experiment in 1852. Anthony Trollope, the novelist, who was
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