BUSBRIDGE’S DRAWINGS OF BUILDING CONSTRUCTION, 11 Sheets. Mounted, 5s. 6d.; unmounted, 2s. 9d.

GEOLOGICAL:

DIAGRAM OF BRITISH STRATA. By H. W. Bristow, F.R.S., F.G.S. A Sheet, 4s; mounted on roller and varnished, 7s. 6d.

MECHANICAL:

DIAGRAMS OF THE MECHANICAL POWERS, AND THEIR APPLICATIONS IN MACHINERY AND THE ARTS GENERALLY. By Dr. John Anderson.

This Series consists of 8 Diagrams, highly coloured on stout paper, 3 feet 6 inches by 2 feet 6 inches, price £1 per set; mounted on common rollers, £2.

DIAGRAMS OF THE STEAM-ENGINE. By Professor Goodeve and Professor Shelley.

These Diagrams are on stout paper, 40 inches by 27 inches, highly coloured.

The price per set of 41 Diagrams (52-1/2 Sheets), £6 6s. These Diagrams can be supplied varnished and mounted on rollers at 2s. 6d. extra per Sheet.