We give a cut of the quern grinding-mill, which, towards the end of the last century, was in use in that country, and which is thus described by Dr. Johnson in his "Journey to the Hebrides:""It consists of two stones about a foot and half in diameter; the lower is a little convex, to which the concavity of the upper must be fitted.

Wedded to this view was the discoverer, Mr. Turner, of Croydon; while Percival commits himself to the statement that it is either the central ridge or the postero-inferior surface of the navicular bone, or the opposed concavity in the perforans tendon, that shows the earliest signs of the disease.

The convexities on one side of the fissure correspond with marked regularity to the concavities on the other.

His shoulders were hollowed by the usual droop, and his rusty black waistcoat showed the same creased concavity at the waist, the same flabby prominence below.

Shell ovate, conical, fulvous-brown, rough, with numerous impressed spiral lines; the spire acute, the whorls rather convex, last slightly angular, the columella lip purplish-brown; axis solid, with a lunate concavity behind the usual situation of the umbilicus.

"The wretches who worked their evil will with this beautiful relic of piety had actually chiselled the ornament down to a plane surface and filled the concavities with plaster."

The derivatives I have referred to their primitives, with an accuracy sometimes needless; for who does not see that remoteness comes from remote, lovely from love, concavity from concave, and demonstrative from demonstrate?