To wit, M, D, C, F, P, M, will be
2.502.656
The Inches which you in the Margin fee. S(Fig. 16)
And alfo if a Girt of it be made
Over the Vertex, by a Line right laid ;
To wit, M, B, and C, you then will find
The Measure that is by the fame defign'd,
Inches One Hundred Seventy and Nine,
To which Eight Tenths of an Inch you must join.
Thefe feveral Hints obferv'd, (you need not fear)
To find its true Contents fufficient are

Says the Excifeman (looking like a Woman)
Thefe Data in our Practice are not common :
But to oblige you, Gentlemen, I'll try
If your Enquiries 1 can fatisfy.

Away with Mind confus'd, the Gauger went,
And feveral Days in poring on it fpent;
A Fortnight after, walking in the Street,
With him I unexpectedly did meet ;

} 179.8

And thus addreft, Pray, Sir, have you disclos'd
That Question, which was late to you propos'd?
When he with an ingenuous, Condefcenfion
Did own, that it furpafs'd his Comprehenfion;
(And fo produc'd Simonides Excufe

He made to HIERO King of Syracuse,)

That the more he did in his Mind revolve it,
He found himself lefs able to refolve it.
You, who the Mathematick Arts profefs,
Pity an honest Soul in this Diftrefs,
And kindly help him to fome Information,
Whereby he may preferve his Reputation.

1

(14.) Question the 28th, by J. T.

Given the Abfciffa of the Parabola AEB (Fig. 17.)viz. AC 40. and the Correfponding Semi-ordinate BC 30. it is required to find the Locus of all the Points, as F, G, being fuch, that two Tangents as FD, FH; or GE, GI, to the Parabola being drawn from them; the Angles DEH, or EGI, contained by thefe Tangents, may be always equal to a right Angle.

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YORK: Printed by THOMAS GENT: And Sold by J. WILFORD, behind the Chapter-House in St. Paul's Church-Yard, LONDON: And by T. HAMMOND, in the Pavement, Y & K, 1734 Price Six Pence: