SCOTLAND AND IRELAND 



instead of just closing up the space between the 

 two nearest side-blocks is pushed back between 

 them so as to form with them a small three-sided 

 portico outside the chamber, but still under the 

 shelter of the cover-slab (Fig. 5, b). A good 

 example of this exists at Gaulstown, Waterford, 

 where a table-stone weighing 6 tons rests on six 

 uprights, three of which form the little portico 

 just described. The famous dolmen of Car rick- 

 glass, Sligo, is a still more developed example of 

 this type. Here the chamber is an accurate rect- 

 angle, and the portico is formed by adding two 

 side-slabs outside one of the end-slabs, but still 

 under the cover. This last is a remarkable block 

 of limestone weighing about 70 tons. This form 

 of tomb is without doubt a link between the 

 simple dolmen and the corridor-tomb. The 

 portico was at first built under the slab by pushing 

 an end-stone inwards. Then external side-stones 

 formed the portico, though still under the slab. 

 The next move was to construct the portico outside 

 the slab. The portico then needed a roof, and the 

 addition of a second cover to provide it completed 

 the transition to the simpler corridor- tomb. In 

 many cases the Irish simple dolmens were sur- 

 rounded by a circle of upright stones. At Carrow- 

 more, Sligo, there seems to have been a veritable 

 cemetery of dolmen-tombs, each of which has 

 one or more circles around it, the outermost being 

 120 feet in diameter. The tombs in these Carrow- 



41 



