120 GLOBULAR SPONGES ARTIFICIALLY PERFORATED. CHAP. vn. 



argument in favour of their having been used as necklaces or 

 bracelets, appears to me a sound one. He says he often found 

 small heaps or groups of them in one place, all perforated, just 

 as if, when swept into the river's bed by a flood, the bond which 

 had united them together remained unbroken.* 



* Kigollot, M&noire sur des Instruments en Silex, &c. p. 16. Amiens, 1854. 



