Weather During October in San Francisco. The best time to visit San Francisco is during September, October, and early November. The people here claim the weather here is very inscrutable yet October is one of the best months here â the time of the fall with bright sunny days and slightly cold nights and occasional drizzles. You are so going to love it here!
Bone china is a type of soft-paste porcelain that is composed of bone ash, feldspathic material, and kaolin. It has been defined as ware with a translucent body containing a minimum of 30% of phosphate derived from animal bone and calculated calcium phosphate.Developed by English potter Josiah Spode, bone china is known for its high levels of whiteness and translucency, and very high mechanical strength and chip resistance.t has been defined as ware with a translucent body containing a minimum of 30% of phosphate derived from animal bone and calculated calcium phosphate. Developed by English potter Josiah Spode, bone china is known for its high levels of whiteness and translucency, and very high mechanical strength and chip resistance.
Material for Bone China   Bone china is made of 50% bone ash, & 25% each of china clay and china stone. It is combined with water to make a slurry, which is then fashione â¦ d into cups, saucers, plates and so on.his gives the ware strength and whitens it. One difference between porcelain and bone china is the whiteness of bone china. Another is the translucence of bone china: holding it to a light with your hand behind the china should reveal the shadow of your hand.