X-rays simply explained : a handbook on the theory and practice of radiography
A 1903 London handbook by Robert Pickersgill Howgrave-Graham, published by Percival Marshall for amateur radiographers and electrical experimenters learning to build and use X-ray apparatus. Line diagrams show glass vacuum tubes, electrodes labelled K and A, and rayed discharge fields, alongside dark halftone photographs of coils and discs; useful for laboratory glassware silhouettes and radiating line patterns.
