Dr R Greys Memoria Tecnica Or Method of Artificial Memory to Which Are
Dr R Greys Memoria Tecnica Or Method of Artificial Memory to Which Are
Richard Grey
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So- lidus, aureus. Tetradrachmon, 4 drachmae. Tetro- bolon, 4 oboli. Tressis, 3 asses. Tricessis, 30 asses. Tridrachmon, 3 drachmae. Triens c, . F as. Triobolon, 3 oboli. Figessis, 20 asses. Uncia c, -^ as. 1 N. B. The several coi, measures, and weights, being reduced to the lowest denominations, the memorial verses answer all the purposes of the largest tables : (1) The difference of any two terms being known by subtraction a : and (2) How many of any make one of another, by division *> e. G. ...(a) What is the dif- ference between a Shilling and a Shekel? Answ. (Sh-afe) 110 (Sh-oA'J 48=62 q. I. E. S 2 : 3 : 2 S 1 = S 1 : 3 : 2, the shekel more than the shilling, (b) How many Spans make a Fathom ? Answ. (Fath-oid) 72 -r (Spa-) 9 = 8. Accordingly, if it be asked, IVhat is a fathom? (and so of any other) the answer may be made, the same way, in any of the prior denominations : e. G. 24 palms, or 6 feet, or 4 cubits, or 2 yards, or 1 -^ pace, &c. 2 Any whole was called AS, and 1 twelfth of it UNCIA [whence our terms of ounces for weight, and inches for length].
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