“From nature, and copied by special permission of the Publishers, from Ganot's Physics (Longmans & Co.); Guillemin's Forces of Nature and Applications of Physical Force (Macmillan & Co.); Discoveries and Inventions of the Nineteenth Century, and Pepper's Boy's Playbook of Science (Routledge); Fonvielle's Thunder and Lightning (Sampson Low & Co.); Science for All (Cassell, Petter & Galpin); etc. etc.”