CII. NEW SOUTH WALES LIGHTHOUSES. 



the building, as far as possible, of concrete ; the walling through- 

 out being of concrete blocks cast in moulds of suitable size and 

 shape to the various portions of the work, mostly in courses 12" 

 high. These blocks, when moulded, are cemented on all external 

 faces, then stacked until fit for us?, when they are set in the 

 same manner as is used for ordinary stonework, being bedded and 

 jointed with cement mortar and having a margin of painters' 

 putty on the outer edge of all beds and joints. This class of 

 work, while novel to the colony, is largely used in other parts of 

 the world, and has the advantage of obviating the disfiguring 

 cracks caused by shrinkage of material usually seen on the faces 

 of structures built with mass concrete. 



Lighthouse Buildings. 



The lighthouse buildings proper comprise the tower with 

 entrance lobby and porch, and two large rooms for use as store 

 and workrooms. They face the south-east, the tower being in 

 the centre and having half its diameter clear in advance of the 

 rest of the buildings, the work and storerooms being on either 

 side with the lobby and porch in the central rear. The tower is 

 11' 9" diameter in the clear inside, and 44' high from the 

 ground to top of walling. It stands on a footing of mass con- 

 crete let into the rock as far as is necessary to insure solidity, 

 the external face of walls rising from a bold moulded face and 

 with a concave batter to the top, which is fitted with a massive 

 cornice supporting the projecting gallery round the outside of the 

 lantern. The tower is divided into three stories by concrete 

 floors, 12" thick, the level of the lowest floor being kept up 

 3' above the ground. Access to the various floors is gained 

 by staircases 3' wide extending from floor to floor, constructed 

 of concrete blocks built in as the work proceeds, and fitted with 

 rubbed slate treads, similar slate being fitted round the margin 

 of all well holes, the treads being fixed with strong brass screws 

 for the convenience of renewal when worn. The handrail to all 

 staircases is of 2" heavy brass tubing, the balusters are of orna- 

 mental wrought iron, and the newels are of cast iron. All the 



