Gradually, however, it
became better, until now--although England turns out almost no true
porcelain, that is, the scientifically blended kaolin and petuntse
clays--she makes some of the most beautiful and durable china
manufactured anywhere."
"What is it made of?" inquired Theo, much puzzled.
"Different combinations of kaolin clays and phosphates; a ware which
in the porcelain trade is known as bone china," replied Mr. Croyden.
"The phosphate of lime that is mixed with the kaolin renders the body
of the ware more porous and elastic. On such china the glaze does not
blend with the body and become an actual part of it as is the case
with a true porcelain, but on the contrary is an outer coating which
can be scratched through. But bone china is very strong, and does not
chip as does a more brittle variety. For that reason where wear and
durability are desired it is often preferred."
Mr. Croyden stopped a second.
"When I tell you these facts you must not think I am crying down the
English wares," he said. "I could show you beautiful varieties of
English porcelain. I merely wish you to understand that it has not the
qualities of the Chinese, Japanese, Sevres, Dresden, or even the more
modern Limoges ware.
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