They both laughed.
"I believe you are something of a diplomat, Theo," observed Mr. Croyden. "You are either a diplomat or you are a schemer. Sometimes it is very hard to tell the one from the other. In either case you seem determined to give me no peace, so I fancy I may as well tell you about English porcelain and have done with it. If I do not do it now I shall have to do it some other time, I suppose."
"I suppose you will," came delightedly from Theo.
"Well, here goes, then!"
The elder man settled back into a comfortable position and Theo wriggled contentedly into the opposite corner of the seat.
"As you can well understand," began Mr. Croyden, "the discovery of kaolin set England as eagerly to experimenting at porcelain-making as it had the other nations. Contrary, however, to other countries the English Government lent no helping hand to the industry, offering neither money nor inducements to those who would take it up. Therefore only those persons who were sufficiently interested in the new venture, and could afford to make the attempt with their own capital, dared go into it. Fortunately there were at hand some of these ambitious manufacturers. Their early experiences are interesting not so much because of the quality of their work though much of it was good, as because they were the forerunners of later workers. The paste they used was not as fine as that of the Chinese or Japanese; or in fact, that of the early Dresden or Sèvres ware. 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, Sèvres, Dresden, or even the more modern Limoges ware. But what it loses in delicacy and translucence it makes up in strength, and perhaps after all strength is as desirable as any other quality."