The Egyptian amulets of the earliest period, up to the XII dynasty (circa 2000 B.C.), differ considerably from those made and worn after the beginning of the XVIII dynasty (1580 B.C.). Those of the earlier period are not numerous and present but a small number of types, animal forms or the heads of animals constituting the most favored models. The precious stone materials are principally carnelian, beryl, and amethyst. After the close of the so-called Hyksos period, the age during which foreign kings ruled over Egypt, came the brilliant revival and development of Egyptian civilization that characterized the XVIII dynasty. Some of the old forms were entirely cast aside while others were greatly modified in form and significance, the animal forms losing much of their fetichistic quality and coming to be more and more regarded as images of the multifarious divinities worshipped in this later period. In many cases the animal type was entirely or partially discarded and the amulets figured the conventional types given to the various divinities. However, while some of these images were wholly human, many of them show a human body with an animal head. Various symbolic designs were also favored, one believed to signify the blood of Isis having the form of a knot or tie. A frog fashioned out of lapis-lazuli and having eyes of gold is one of these amulets of the XVIII dynasty or later. An interesting Egyptian talisman in the Louvre is engraved with a design representing Thothmes II seizing a lion by the tail and raising the animal aloft; at the same time he brandishes in the other hand a club, with which he is about to dash out the lion’s brains. The Egyptian word _quen_, “strength,” is engraved beneath the design and indicates that the virtue of the talisman was to increase the strength and courage of the wearer, the inscription being a kind of perpetual invocation to the higher powers whose aid was sought.[175] The children of Israel, when in the desert, were said to have engraved figures on carnelian, “just as seals are engraved.”[176] This statement, repeated by many early writers, may perhaps have arisen from an identification of carnelian with the first stone of the breastplate, the _odem_, unquestionably a red stone, and very possibly carnelian. There can be no doubt that this was one of the first stones used for ornamental purposes and for engraving, as a number of specimens have been preserved from early Egyptian times. Because of the cooling and calming effect exercised by carnelian upon the blood, if worn on the neck or on the finger, it was believed to still all angry passions.[177]