EASSIE, P. B.—Wood and its Uses.

A Hand-Book for the use of Contractors, Builders, Architects, Engineers, and Timber Merchants. Upwards of 250 illustrations. 8vo, cloth 1 50

EDDY, Prof. H. T.—Researches in Graphical Statics.

Embracing New Constructions in Graphical Statics, a New General Method in Graphical Statics, and the Theory of Internal Stress in Graphical Statics. 8vo, cloth 1 50

ELIOT, Prof. C. W., and STORER, Prof. F. H.—A Compendious Manual of Qualitative Chemical Analysis.

Revised with the co-operation of the authors. By Prof. William R. Nichols. Illustrated. 12mo, cloth 1 50

ELLIOT, Maj. GEO. H., U. S. E—European Light-House Systems.

Being a Report of a Tour of Inspection made in 1873. 51 engravings and 21 wood-cuts. 8vo, cloth 5 00

ENGINEERING FACTS AND FIGURES.

An Annual Register of Progress in Mechanical Engineering and Construction for the years 1863-64-65-66-67-68. Fully illustrated. 6 vols. 18mo, cloth (each volume sold separately), per vol 2 50