Account of the Skerryvore lighthouse

by Alan Stevenson

Eng^d. by W. & A. K. Johnston Edin^r.

Stevenson’s Account of Skerryvore Lighthouse.

CATADIOPTRIC APPARATUS.

FOURTH ORDER

PLATE XX

Walter H. Ferrier, del^t. Engraved by W. & A. K. Johnston Edin^r.

Stevenson’s Account of Skerryvore Lighthouse.

MECHANICAL LAMP
for
DIOPTRIC LIGHTS
of
FIRST ORDER.