|Title||Unpublished paper and letter, 'De quadratura circuli' ['On the quadrature of the circle'] by Joan Frider Seivert|
|Description||Seivert presents his method for finding the quadrature of the circle. Followed by a covering letter from Seivert to the Royal Society.|
Written by Seivert in Cibini [Sibiu, Romania?].
|Physical description||Ink on paper|
|Related records in the catalogue||AP/10/10/1|