Identification of the British Inch as the Unit of Measure. 157 



'' Dear Sir : 



" It is with pleasure I acknowledge yours of the 5th, as it 

 enables me to understand your purpose. Such a book as is 

 referred toby Mr. Gridley " (the 'antiquarian book') "does not 

 exist, but the records of the Academy of N. H. ought to contain 

 an account of the transaction with Mr. Gridley, which must have 

 occurred about the time you mention ('41). I remember the cir- 

 cumstances of the transaction distinctly, and I also remember the 

 particular stone referred to. Mr, Gridley was in the habit of show- 

 ing me his findings from the Fifth St. mound, so I feel sure the 

 specimens deposited in the collection by him were found in that 

 mound. Mr. Gridley could have had no motive to deceive any 

 one in regard to the place where the stones were found. Besides, 

 he was too honest to have done so. I know he went very often to 

 the mound in search of relics, and I sometimes went there with 

 him, but I never found any implements, but I once found three 

 human skeletons, each lying on the back, extended,, and the skulls 

 of all three were crushed in from back to front, which I consider 

 an unusual and interesting fact. , 



Respectfully Yours, 



(Signed) S. T. Carley." 



With this history of the Gridley Measure, we give Figure X 

 the ac'ual measures of the Gest Tablet, reduced to half size, taken 



Fig.'X. 



from the slab itself, as referred by try squares to a perfect rectangle. 

 By calipers the measures of the stone are as follows :. Extreme 

 length 4.96-7 inches. Greatest width 2.99 inches. Least width 

 2.50 inches. Corrected by being referred to a perfect rectangle, 



