I go to the town with Shelley, to buy a telescope for his birthday present. In the evening Lord Byron and he go out in the boat, and, after their return,Shelley and Clare go up to Diodati; I do not, for Lord Byron did not seem to wish it. Shelley returns with a letter from Longdill, which requires his return to England. This puts us in bad spirits. I read Rêveries and Adèle et Théodore de Madame de Genlis, and Shelley reads Pliny’s Letters.
— Mary Shelley writes in her journal for August 2 1816.