Letter, from [Giulio Carlo, Count Fagnano] de Fagnani to [Brook Taylor], dated at Sinigaglia [Senigallia, Italy] Apologises for reaching out without being introduced. Has heard of Taylor's work on fluxion. Proposes his solutions to two problems of integral calculus to all English mathematicians. Sends a list of his publications in Italian journals to add his contribution to the controversy with the Bernoulli family, to which he was introduced by [Nicolas] Bernoulli Professor of mathematics in Padua. Praises calculus and infinitesimals as a glorious contribution of England to mathematics. Asks for his work to be shown to the Royal Society. Asks if Taylor can reply in either Latin or French. 6 April 1723