Research Buildings 



189 



inch thickness of cement mortar in tlie ])ro])ortion of 1 part of cement to 3 of sand. The 

 walls are of best hard-bnrned brick laid with shove-joint in cement mortar which is in the 

 proportion of 1 part of fresh Portland cement, with 10 per cent of hydrated lime paste 

 added, to 3 parts of sand. Every sixth course is bonded with headers. This type of wall 

 was adopted because it gives the greatest stability and solidity. All the stone-work is 



Fig. 2. Details of Front Entrance to Main Buildinp;. 



