Contains A Note on the use of Kater's Pendulum, from Proceedings of the University of Durham Philosophical Society, vol. II, part 4, pp.185-186; the Effect of Light on Selenium, from Proceedings of the University of Durham Philosophical Society, vol. II, part 5, pp.213-221; Thomson's published dissertation titled Über den Durchgang Hertzscher Wellen durch Gitter [the passage of Herzian waves by grid], published by Johann Ambrosius Barth; and a pamphlet from the Historical Association titled Some influences of the Geography of Northumberland on its History.