PLATE LX. 





Distribution of finest nucleated nerve fibres to the elementary muscular fiv rnylo hyoid muscle of 



the liv j (hyia arborea). Drawn on the block by tb a magnified 



1700 diameters (' .nade by Messrs Powell aij of each muscular 

 fibre corresponds to that of a human red bloon 



Scale, ToJoo f an En n.< x V) diau.e'.ers. 



To face page 334. 



