The ‘West American Scientist. roo 
*‘dealing only as yet with the externals of the monument, at tl 
“same chief result ee the Laren Pvramid’s standards 
“of the ccuroiaed yard and its multiples and sub- mutipton by oa - 
‘thousandth of their Dyer ds lengths wee give us an pera per 
ee the coast survey is Seah thuusanth pare than 
British yard, so that the United States inch would be lenger — 
the British inch by one-hun Ired thousanth of its length. 
isa distance which is far less than the breadth of the fine Ti é 
a steel rule used to divide one inch from another, and is’ 
practically disregarded, The British inch, foot, said yard 
then, identical with similar measures of length used in the 
States. 
~The British and Umted States foot, the English shilling. 
_ divided into twelve parts, the twelve hours of the workin 
shown on the dial of the clock, the twelve months of the year, 
proverbial round dozen, have all much to recommend them 
their system of division, outside the fact that long establish 
has rendered them so familiar to all classes. ‘The number 
divisible by more whole numbers than is the number 10, — 
factors of 12 are 2, 3, 4, and 6, while those of 10 are 2 
Among the factors of 12, 2, 4, and 6 are each divisible by 
is again divisible by 3. The balance of advantage between 
unit composed of 12 equal parts, and the unit of 10 is that 
ten-part unit lends itself readily to computation, bution every 
operation the weight of advantage lies with the 12-part unit. 
_ same may be suid of the binary division of the inch which 8 
largely used in pl the handicrafts, It is in fact the ease ¥ 
*The Standard Dictionary of the English ee New Y k: Funk 
and stg ane drat) ae 
