Otto Wallach, German chemist and academic, Nobel Prize laureate (b. 1847)
Otto Wallach (German pronunciation: [ˈɔto ˈvalax] (listen); 27 March 1847 – 26 February 1931) was a German chemist and recipient of the 1910 Nobel Prize in Chemistry for his work on alicyclic compounds.

1931Feb, 26
Otto Wallach
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Events on 1931
- 20Feb
San Francisco-Oakland Bay Bridge
The Congress of the United States approves the construction of the San Francisco-Oakland Bay Bridge by the state of California. - 19Mar
Nevada
Gambling is legalized in Nevada. - 23Mar
Indian independence movement
Bhagat Singh, Shivaram Rajguru and Sukhdev Thapar are hanged for the killing of a deputy superintendent of police during the Indian struggle for independence. - 14Apr
Alfonso XIII of Spain
The Spanish Cortes deposes King Alfonso XIII and proclaims the Second Spanish Republic. - 7Nov
October Revolution
The Chinese Soviet Republic is proclaimed on the anniversary of the October Revolution.