Grigory Vyrubov

Grigory Nikolayevich Vyrubov, or Grégoire Wyrouboff (Russian: Григорий Николаевич Вырубов; 31 October 1843, in Moscow – 30 November 1913, in Paris) was a Russian Empire Positivist philosopher and historian of science.

In 1896 Vyrubov criticized Mendeleev's notion and statement of a periodic law, i.e., "all the properties of bodies are periodic functions of their atomic weights," citing the inversion of tellurium and iodine, which breaks the order of monotonically increasing atomic weights.

[2] Although he had never trained as a historian of science, in 1903 he was elected as Pierre Laffitte's successor to the chair of history of science at the Collège de France, and held the chair until his death.

He was initially a member of the Scottish Rite, but came into conflict with the Grand Lodge of France and switched to the Grand Orient of France (French Rite).

He was the "Worshipful Master" of a lodge of Russian emigrants known as the "Rose of the Perfect Silence."