TELLURIUM. French, late 19th century, height 17", width 18". Signed: INSTRUMENT ASTRONOMIQUE M.VIVIEN DE ST MARTIN PAR AMBASSADE DE FRANCE DANS LE EMPIRE AUTRICHE-HONGARIE 1889. 17,000pounds. driven by clockwork, devised to demonstrate the effect of the motion of the earth and the obliquity of its axis in causing the alternation of day and night, and the succession of the seasons. to teach "the use of the globes", as elementary astronomy was called.