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EXPLANATION OF PLATE XXIV. 



Fig. 1. A portion of the surface of the fragment of skin removed from the church- 

 door of Hadstock, in Essex, exhibiting a hair projecting from it, mag- 

 nified 320 diameters. 



Fig. 2. The upper part of the same hair, magnified 500 diameters. 



Fig. 3. A portion of the same hair, exhibiting the cellular structure of the interior, 

 similarly magnified. 



Fig. 4. A portion of a small light hair from the human arm, for the sake of 

 comparison with the ancient specimens, magnified 500 diameters. 



