SOMETHING NEW.
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FREE LECTURE. ....."


PROF. PORTER, Orom the city of New
York would respectfully inform the Ladies
and Gentlemen Of Washington that he will
Lecture on Monday aud Tuesday. October 10
and 20, at the Apollo Hall on New SYSTEM
OF ARITHMETIC AND MATHEMATICS. BY this
system, all Of our business calculations are
performed by ONE RULE ONLY. Prof. P. will
solve problems OH the black board under the
various rules used in mercantile and mechani-
cal transactions, thereby enabling the audience
10 Judge Of its merits. The lecture will COM
mence at O'Clock. Admission free.


Oct 1915