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ACS President: Frank W. Clarke (1847-1931)

Served as President: 1901

Many of his concepts concerning the chemical evolution of geological systems are still valid

With Harvey W. Wiley, he sent out notices suggesting the formation of a rival National Chemical Society which resulted in the organization of local sections within the American Chemical Society


  • B.S., 1867, Lawrence Scientific School, Harvard Colleges, Chemistry

Career Highlights:

Notable Accomplishments:

Presented his first evaluation of atomic weights at the AAAS meeting in August 1879 and in 1882 published his recalculation of the atomic weights.

Major Awards and Honors:

Service to Science:

  • Chairman, chemistry section of the American Association for the Advancement of Science (AAAS),

Did You Know

. . . that in the early days of his career he wrote newspaper and magazine articles to supplement his salary?

. . . that he believed “The rarest substances, however, whether elementary or compound, [can] supply data for the solution of chemical problems”?

. . . that his middle name is Wigglesworth?

Former ACS President Frank W. Clarke