A signet-ring, believed to be the Council Seal of Queen Henrietta Maria, made by warrant, Sept. 6, 1626, is the property of Miss Hartshorne, and has a circular bezel, set with sapphire, engraved with escutcheon, bearing the arms of England surmounted by a crown, the letters M and R at the sides; on the shoulders is the rose of England in coloured enamel. Diameter of the ring 1⅛ in. This curious relic was exhibited at the Loan Exhibition of Ancient and Modern Jewellery at the South Kensington Museum in 1872. Mr. Octavius Morgan, F.R.S., F.S.A., has in his valuable collection of rings one formed with a diminutive squirt, which, being concealed in the hand, would, at pleasure, throw a jet of water into the eye of anyone examining it.[77] [Illustration: Squirt-ring.] In the Waterton Collection is a bronze squirt-ring with octagonal bezel, finely chased with mask of Silenus, the ring hollow, with tube projecting from the hoop, so that it can be used as a squirt. Italian work of the sixteenth century. L. one and seven-tenths inch. In the same collection, also, is a ring made to serve as a _whistle_. It is of lead, with circular bezel finely chased in relief, with profile heads of Charles the Fifth and his empress. Flemish, sixteenth century. Diameter one and one-eighth inch. In the ‘Annual Register’ for 1764 we read that Mr. Arnold, of Devereux Court, in the Strand, watchmaker, had the honour to present His Majesty George the Third with a most curious repeating watch of his own making, _set in a ring_. The size of the watch was something less than a silver twopence; it contained 120 different parts and weighed altogether five dwts. seven grains and three-fourths. Among curious ring relics may be mentioned one in which a tooth of Sir Isaac Newton was set. The tooth was sold to a nobleman in 1816 for 730_l._, who had it placed in the ring, and wore it constantly on his finger. Denon, the French _savant_, wore a ring set with a tooth of Voltaire. At Norwich in 1847 a silver ring was exhibited, set with a dark-coloured substance, supposed to be the palatal tooth of a fish, like those of the _Sphœrodus Gigas_. This closely resembles the precious ring given (according to tradition) by Richard Cœur-de-Lion, to one of the Dawnay family in the Holy Wars, and adopted as their crest. It is preserved in the collection of Viscount Downe, and was shown by him at a meeting of the Institute at York. Another ring, with the same kind of setting, belonged to the late Mr. Albert Way. Date, the thirteenth century. In the collection of Mr. A. J. B. Beresford Hope is a gold ring set with a sapphire of extraordinary brilliancy, known as the ‘saphir merveilleux,’ which formerly belonged to Philippe d’Orléans (Égalité), and is mentioned by Madame de Genlis.