## Meeting of 9 December 1904

**Location: ** Edinburgh Institution
**Chair: ** Thomson, William L

**Papers: **

Pinkerton, Peter: "The turning values of cubic and quartic functions and the nature of the roots of cubic and quartic equations"

Picken, D K: "The proof by projection of the addition theorem in trigonometry"

Collignon, Édouard: "Démonstration de deux théorèmes de géométrie", {Title in minutes: "Two geometrical notes"}

**Elected: **

Jeffrey, William

Valentine, George D

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Index of summaries for meetings in 1904-05