Chicken grit should not be confused with a calcium supplement like oyster shell. Grit is for the purpose of aiding in digestion. Oyster shell is for the purpose of adding calcium to your laying flockâs diet. Calcium is the main component in egg shells and is an important element to supplement into your henâs diet.
Castles. The Normans were master castle builders. After 1066, England witnessed a massive castle building programme on the orders of William the Conqueror. First, motte and bailey castles were built.Once William had firmly established his rule in England, he built huge stone keep castles.By the time of Edward I, concentric castles were being built.fter 1066, England witnessed a massive castle building programme on the orders of William the Conqueror. First, motte and bailey castles were built.
The castle which later became known as the Tower of London was begun by William the Conqueror in 1066. It began as a timber fortification enclosed by a palisade. In the next decade work began on the White Tower, the great stone keep that still dominates the castle today.he White Tower is a central tower, the old keep, at the Tower of London in Tower Hamlets, London, England.