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 academy and society in the world, he was black-balled by the Imperial Academy of Sciences of St Petersburg. This was due to jealousy and revenge! Once he had the honour to be consulted by the Russian Government regarding education, and he preferred one of his own to that of Count Tolstoy. The count's detectives followed him about for years, but found nothing against him. All the same, Tolstoy had him black-balled at the Academy! Later on in his career Mendeléeff refused the honour; but, as Miss Ellison says, "the best test of the value of a man's work is the reputation it has gained outside his own country."

Mendeléeff died on Saturday, 2nd February 1907—within five days of the seventy-fifth anniversary of his birth.

The Czar Nicholas telegraphed to his widow: "Please accept my deepest sympathy in your terrible loss, which I also share. Russia has lost one of her best sons in the person of Professor Mendeléeff, who will ever remain in our memory."

Three days after the death of Mendeléeff, his colleague and friend, Professor N. Menschutkin, died. The news of Mendeléeff's death found him lecturing, and the sad tidings so affected him that he quitted the lecture theatre of the university at once, and in twenty-four hours he died suddenly.

In conclusion, Mendeleeff's whole writings are coloured