The use of the birthing chair or similar devices has been seen around the globe, not isolated to a particular region. The birthing chair can be traced to Egypt in the year 1450 B.C.E. Pictured on the walls of The Birth House at Luxor, Egypt, is an Egyptian queen giving birth on a stool. It can also be traced to Greece in 200 B.C as it is featured on an ancient Grecian sculpted votive.
Water weighs 64 pounds per cubic foot and there are 27 cubic feet in one cubic yard. So a cubic yard of seawater weighs 1728 pounds. The original VW Beetle weighed only 1650 pounds! If that seems hard to believe, consider that 1 cubic foot is almost 7.5 gallons, and a cubic yard is more than 201 gallons.
One pint of water weighs one pound (1.04316 lbs/pint). One gallon of water weighs 8.3453 pounds. One cubic foot of water contains 7.48052 gallons. The weight of one cubic foot of water is 7.48052 gallons times 8.3453 pounds, which equals62.42718356 pounds of water per cubic foot. One cubic foot contains 1728 cubic inches.