APARATOS DE TALLER, ETC.

NORTHCOTT.—LATHES AND TURNING, Simple, Mechanical and Ornamental. By W. H. Northcott. With 338 Illustrations. 8vo., 18s.

SHELLEY.—WORKSHOP APPLIANCES, including Descriptions of some of the Gauging and Measuring Instruments, Hand-cutting Tools, Lathes, Drilling, Plaining, and other Machine Tools used by Engineers. By C. P. B. Shelley, M.I.C.E. With an additional Chapter on Milling by R. R. Lister. With 323 Woodcuts. Fcp. 8vo., 5s.

MINERALOGÍA, METALURGIA, ETC.

BAUERMAN.—Obras de HILARY BAUERMAN, F.G.S.

MINERALOGÍA SISTEMÁTICA. Con 373 grabados en madera y diagramas. 8.º menor, 6s.

MINERALOGÍA DESCRIPTIVA.

Con 236 grabados en madera y diagramas. 8.º enilla., 6s.

GORE.—THE ART OF ELECTRO-METALLURGY, including all known Processes of Electro-Deposition. By G. Gore, LL.D., F.R.S. With 56 Woodcuts. Fcp. 8vo., 6s.

HUNTINGTON Y M'MILLAN.—METALS: their Properties and Treatment. Por A. K. Huntington, Profesor de Metalurgia en el King's College de