This beautifully symbolic stone is found in Paris, Maine, in San Diego County, California, and in Brazil. At times the outer edge of the stone is green, a transparent white zone surrounding the interior red zone, the whole looking for all the world like a section of watermelon, and hence it is sometimes called the “Watermelon Stone.” Then again, the colors are joined in longitudinal strips, showing them side by side. This variety of tourmaline, although rare, is not especially costly, and is one more addition to the stones of sentiment, and more especially to those appropriate as symbols of our fair ideal, universal peace. We can see symbolized in them the great and consoling fact that, however marked may be the differences between any two peoples, they need not be cause for enmity, but may instead become true and enduring sources of peace and bonds of union. The characteristic talents of each one will supplement and complete those of the other, so that working together in harmony they may accomplish far more for each other and for humanity in general than either could do singly. At an early date amber was brought from the Baltic coast to Rome, and Tacitus states that those who collected it called it _glæsum_, a name later applied to the glass introduced into that region by Roman traders. The natives knew nothing of the nature or growth of amber, and had no use for the material, only collecting it for export to Rome, where it commanded such a high price as to excite their astonishment. Tacitus gives in the following words his theory of the origin and character of amber—his chief error being due to his belief that the substance was of very recent formation.[104] Now you must know that amber is a juice of trees, since various creatures, some of them winged, are often found in it. They have become entangled in the liquid and then inclosed when the matter hardened. Therefore I believe that, as incense and balsam are exuded in the remote East, so in the luxuriant groves and islands of the West are juices which are forced out by the sun close to them. These flow into the neighboring sea and are washed up by the tempestuous waves on the opposite shore. If you test the quality of amber with fire, it may be lighted like a torch and burns with a small, well-nourished flame; then it is resolved into a glutinous mass resembling pitch or resin. Both Juvenal[105] and Martial[106] relate that effeminate Romans used to hold balls of amber in their hands to cool them during the summer heat. If any such agreeable sensation was really experienced, it must have been due to the well-known electric properties of this substance. It is stated that the Chinese often place pieces of amber on or in their pillows,[107] a use that may have been suggested by the same considerations.