A copy of Porter's script for 'The Night Sky in April' on Coma Berenice; the Plough, Leo, Denebola, Cor Caroli, and the legend of Berenice's hair; Saturn, its rings and their composition according to James Clerk Maxwell; the 1933 discovery of the white spot on Saturn by Will Hay; the internal composition of Saturn, hydrogen in a metallic phase and the difference between the gas giants and terrestrial planets; and the mathematical nature of modern astronomy.