In Preparation.

THE PROTECTION OF BUILDINGS FROM LIGHTNING. A Treatise on the Theory of Lightning Conductors from a Modern Point of View. Being the substance of two lectures delivered before the Society of Arts in March, 1888. By Oliver J. Lodge, LL.D., D.Sc, F.R.S., Professor of Physics in University College, Liverpool.

Published with various amplifications and additions, with the approval of the Society of Arts.

ELECTRICAL INFLUENCE MACHINES: Containing a full account of their historical development, their modern Forms, and their Practical Construction. By J. Gray, B.Sc.

ELECTRICAL ENGINEERING IN OUR WORKSHOPS. A Practical Handbook. By Sydney F. Walker.

[Ready Shortly

Transcriber's Notes

Page [12]: changed "guage" to "gauge" ( ... cotton-covered copper wire, say No. 20 gauge ...)

Page [35]: changed "change" to "charge" ( ... losing at the same time its electrical charge ...)

Page [55]: changed "guage" to "gauge" ( ... 1 foot of No. 41 gauge pure copper wire ...)