Notebook with notes and calculations, headed Capacities and Inductances of Parallel Wires. with note 'Nearly all up to p 100 done about 1880. Additions made 1887, and arranged in present form.' Comparison of Electrostatic and Electromagnetic Integral Induced Currents, Wire Sheath and External Wire, On Permittances especially of parallel wires. With printed copy of paper 'On the Electrostatic capacity of suspended Wires' by Oliver Heaviside inserted into notebook with MS notes. Square v Triangle Inductance dated May 1890, Electronic Theory (1902), Finite Impulses, Transverse Momentum of Revolving Electron, Calculation of Energy Wasted, September 1903, Apparent Inertia of an Electron. With board covers of notebook separate from rebound volume.