Among the many changes in this list from that habitually followed, it will be noted that the ruby is transferred from December to July, changing places with the turquoise, which became the gem of December. This has been favored on the ground that the warmer-colored gem was best adapted for a July birth-stone, while the paler turquoise was best suited to a winter month, when the sun’s rays are feeble. The contrary, however, is true; for it is in winter that we seek for warmth, while in the heat of summer nothing is more grateful than coolness. This transposition is, in effect, simply a return to the ordering of these stones in the Polish list, which may perhaps have become popular in Europe in the eighteenth century through Marie Leczinska, the queen of Louis XV. Another undesirable change takes the chrysolite (peridot) from the place it has always occupied as the gem of September, and makes of it an alternate for August, with the sardonyx, while the sapphire, properly the gem for April, is made the birth-stone for September. For October neither the tourmaline nor the opal is as appropriate as the beryl, while for June we should prefer the asteria to the moonstone as a substitute for the pearl. This suggested radical change or violation cannot be permitted. The time-honored ordering is familiar now to all who are interested in the matter, and any change, even if one apparently for the better, is liable to disturb the popular confidence in those who are supposed to be familiar with the subject. Above all, there should be no duplication or triplication of birth-stones for any given month, the choice between a birth-stone or an astral or zodiacal stone or the combination of these affording all the variety that is necessary or should be desired. As the diamond does not appear to have been known to the ancients and is not given in any of the lists of birth-stones before the last century, and as diamonds, like gold and platinum, may easily be used as accessories to other stones, would it not perhaps be better to omit the diamond from the list of the stones of the months, and rather use these gems as a bordering or other ornate addition to the stone of the month? The pearl, which is not a stone in any sense of the word, should not appear in the list at all; but it can be worn in some device suggesting a sentiment, as, for instance, an emblem of purity, etc. The tourmaline, as a gem only known in modern times or since the eighteenth century, seems out of place in the list of birth-stones, which ought only to comprise precious or semi-precious stones which have been known and worn from ancient times.