CHAPTER XI.

The Thaumaturgists might have worked pretended miracles with the air-gun, the power of steam, and the magnet — The compass was probably known to the Phocians, as well as the Phoenician navigators — The Finns have a compass of their own;
CONTENTS. IX
and in China the compass has been used since the foundation of the empire — Other means of working pretended miracles — Gal- vanic phenomena — Action of vinegar upon lime — Amusements of physics — Lachryma Batavica, &c. . 243 — 262