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.

The said Benefactor obliged me with a Pecten from Sherburn in Gloc. Another from a Quarry near Oxford, as the Rev. Mr. Cave Nevile did with a large one from a Delf of a Stone at Heddington Com. Oxon. And with Parts of the real Shells of the lesser Escalops, from the same Quarry, some filled with, others adhering to Stone. And the Rev. Mr. Hardy sent me one of the deepest furrowed Pectenitæ from Horbling Com. Linc. Dr. Woodward sent me also two very curious Impressions of the Escallop Shells upon Stones, from Lansdown near Bath and Oxenden Com. Northampt. And one upon Flint from Hamptsted-Heath; with those of other Bivalves from Sherburn and Farmington, Com. Gloc. I have also a Pecten full of cristalized Spar, curiously striated, from Bathmell Com. Ebor. Another taken out of a Block of black Marble, by Mr. Carpenter of Yorke.

My Lord Bishop of Carlisle was pleased to send me also several Species of the very rare Pectunculites, as well of those curiously striated, as of the smoother, whose Shells are of the Chalk: Some of the striated have neat, thin Margins, others thicker approaching to the Terebratula. Pectunculi from Northamptonshire, Sherburn in Gloc. Bakewell in the Peake, and from Portland, and two very large, with a smooth Surface, like polished black Marble. Don. D. Jo. Woodward M D. Cochlea maxima, the real Shell of the larger Cockle, six Inches in Circumference, that Mr. Nevile gathered with other Fossil Shells, as well as Formed Stones, from Heddington Quarry Com. Oxon. Other Stone Bivalves; one of a dark Colour, with a wry Beak, and one Part of the Margin further extended than the other Part, which is round; found at Halton near Leedes: A larger, with this peculiar, that there is a Hollow betwixt the two Beaks. The Bucardites (so called from its Likeness to a Heart) from Oxford and Lincolnshire. Curvirostra, the small Sort striated, Lh. 716.

The Tellenites: These are distinguishable enough from the Pectunculi by their oblong Form; but from the Musculites, and some Sort of the Ostracites, it is more difficult to distinguish them. Very fair ones from Scotland. Don. D. Jac. Sutherland. Tellina minima, Nat Hist. of North, Tab. VI. Fig. 12. The Trigonella: The Name discovers its Triangular Form; the larger and lesser Species. Don. R. D. Episc. Carl. These have a smooth Surface, and bright. The Terebratula are striated, more gibbous, and the Margin thicker, with the middle Part depress'd or elated. The Stones divested of their Shells, Margine sinuato, Lh. 830. from Boston Com. Linc. Don. D. Hen. Thomson. A small one found in the midst of a large Stone at Coxwold School Com. Ebor. Don. D. Hey. A very large one, five Inches in Circumference, from Dr. Hargrave of Coln. Others of different Sizes, Lh. 829. with transverse Striæ. A thin Shell including Chalk, with the Bill perforated (whence the Name.) Don. Rog. Gale Arm. The Pholas amygdaloides. Lh. 878. The Solenites, so called from its resemblance of the Solen or Sheth-shell (n)(n) Lister, p. 192., or perhaps Conchites Mytuloides (o). This and(o) Lhwyd, N. 878. the Pholas were from Heddinton. Don. Rev. Cav. Nevile.

HEREHere are various Sorts, as well of the naked Flint, as of the perfect Shell, different both in Figure, Colour, and Substance; some including Flint, others Chalk, or Stone, I shall begin with the first of Mr. Lhwyd's N° 910. Echinitæ laticlavii maximi fragmentum. The Echinus Ovarius very curious from Sittingburn in Kent, sent me (with eleven other Varieties) by D. Woodward, who hath a most noble Collection. A small one from Heddington Quarry near Oxford: These are curiously studded or embroidered as it were. Don. Rev. Cavend. Nevile M. A. The Echinites Galeatus, with the Shells very perfect: My Lord Bishop of Carlisle sent me four Sorts of the Echinites from the Chalk-Pits near Gravesend. A large one found 100 foot deep at Green-hith in Kent, full of Flint, from Dr. Woodward. Another full of Chalk, from Roger Gale Esq; with another of a lesser Size. A large Flint formed in one of this Sort, divested of the Shell. The Echinus Pileatus including Chalk; another from Northfleet in Kent, and a third from Purfleet in Essex. A lesser Sort from Nittlebed in Oxfordshire, and from a Chalk-Pit near Greenwich. Of these, by the vulgar call'd Cap-stones (from their Likeness to a Cap laced down the Sides (a)(a) Dr. Plot's Nat. Hist. Oxon. p. 92.. Here are several that are quite divested of their Shell; they are for the most Part of the common Ruble Stone, but one (given me by Dr. Plot) of a black Flint; all of them have five double Rows of Points that center at the Modiolus. Of the compress'd Kind, here is part of a large flat Echinus Spatagus, from the Fields near Burford Com. Oxon. Of the lesser Species from Heddington, and of the Stones or white Flint without Shells, but with five Rays, as Dr. Plot's (b)(b) Idem, Tab. II. 14.. The Echinites Cordatus very curious, from Gravesend. Another from a Chalk-Pit, near Croyden in Surry. Another with Flint adhering to it from North-fleet in Kent; a third from Hertfordshire, and one that was found 200 Foot deep, in sinking a Well in the same County. The Echinites Pentaphylloides, from Burford Com. Oxon. The Umbilicus not in the Center, but inclining to one Side (c)(c) Id. Tab. II. 9, 10. And Lhywd, N° 971.. The Radioli of the Echinites; they are ridged and channelled the whole Length of the Stone, and the Ridges purled with small Knots set in the Quincunx Order; they mostly consist of a bright shining Substance, not unlike the Selenites. Dr. Plot takes them for the Lapides Judaici (d)(d) Idem, p. 125.. By the Kindness of my Lord Bishop of Carlisle, and Dr. Woodward, I am furnished with Variety, as to Colour, white and dark; as to Form, round and compress'd; and as to Size, from near two Inches, to little more than half an Inch in Length; and from two Inches round to less than ½ Inch. Some have a Kind of Pedicle, or Knob at one End; others not only want that, but are quite divested of their Parts, having a smooth Superficies. The Aculei, or small Radiolus, from the Chalk-Pits of Kent, Essex and Surry; the larger from Oxfordshire, but the thickest of all were sent me by R. Gale Esq; and seem to be the largest Cucumerinus of Lhwyd.