Syrian Ax ~ The cup decorating the socket of this Ax is the insignia of a Mamluk emir and indicates that he held the important ceremonial office of cupbearer to the sultan. Ca. 1450–1500 [1457×1941]

Syrian Ax ~ The cup decorating the socket of this Ax is the insignia of a Mamluk emir and indicates that he held the important ceremonial office of cupbearer to the sultan. Ca. 1450–1500 [1457×1941]

Fired clay brick from the ziggurat at Ur; cuneiform inscription stamped on face with two accidentally impressed dog’s paw-marks near one edge, ca. 2112–2095 BCE [OS][750×741]

Fired clay brick from the ziggurat at Ur; cuneiform inscription stamped on face with two accidentally impressed dog’s paw-marks near one edge, ca. 2112–2095 BCE [OS][750×741]

One of Marie Curie’s notebooks in the Bibliotheque National in Paris, ca. 1910. It is still so radioactive that it has to be stored in a lead container. [675×899]

One of Marie Curie’s notebooks in the Bibliotheque National in Paris, ca. 1910. It is still so radioactive that it has to be stored in a lead container. [675×899]