Loose in the volume: typescript (carbon copy) instructions for conducting an experiment to determine the velocity of light by measurement of the ratio of the electro-magnetic to the electro-static unit of capacity, not dated

12. Diffraction Phenomena

13. Fresnel's Biprism

14. Thermoelectric E.M.F.

15. Resistance of Electrolyte (Kohbrausch's method)

16. Capillary Electrometer

17. Hysteresis (Magnetometer)

18. Hysteresis (Ballistic)

19. Resolution of Telescope

20. Quarter Wave Plate

21. Convergent Light Polariscope

22. Conductivity of Metal Bar

23. Thermoelectricity

24. Conductivity of Glass

25. Indices of Iceland Spar

26. Saccharimetry

27. Focal Line

28. Focal Planes and Principal Planes of a Ramsden Eyepiece

Covers period 21 Feb. 1921 onwards.