222 Proceedings of the Royal Irish Acaaemy. 



worker had imitated the natural spiral of the shell, placing them close 

 together. 



What use these implements were put to is now only a specula- 

 tion ; but it is probable that they were used for all purposes, such as 

 tilling the ground, fighting, &c. It is still a greater question what 

 the people who made and used these implements would have done if 

 no large shells were to be found in the sea round them. One thing, 

 however, is certain, that they would have found other material to suit 

 these purposes. Smooth stone implements, like those from British 

 Guiana, composed of granite or other igneous rocks, have been found, 

 but very few. These were evidently imported. 



