FERGUSON (J). AN INTRODUCTION TO ELECTRICITY IN SIX SECTIONS. London,Strahan, 1770. In-8 of [4]-140 pages, fawn calf (contemporary binding). ORIGINAL EDITION with 3 folding engraved plates. I. Of Electricity in General. II. A Description of the Electrical Machine. III. A Description of the Apparatus for Making Electrical Experiments. IV. How to know if the Machine be in good Order for performing the Experiment, and How to put it in Order if it be not. V. How to Make the Electrical Experiments, and to Preserve Buildings from Damage by Lightning. VI. Medical Electricity. Boards detached and one booklet unbound.