The Moon-stone or Selenites Rhomboidalis of Dr. Plot (a)(a) Oxon, Tab. II. Fig. I.; it generally consists of ten Planes, four long, as many short, and the two Sides: Here are six different Sizes from less than half an Inch to two Inches, sent me by the Reverend Mr. Cav. Nevile, Fellow of University Col. Oxon. And one larger than any from the Bishop of Carlisle, which hath also two smaller Selenitæ immersed about half Way in the Body of the large one. A Selenites that seems like the half one, split the long Way, so hath but six Planes. Others not so regular. One of the longer Sort and thinner: Others from a Clay Pit at Richmond in Surry, from Shotover Hill near Oxford, from Northamptonshire, found in Digging a Well at Oundle, and from the Worksop Mines, all five from Dr. Woodward's noble Musæum.