TROTTING TRACKS. 



193 



the simple methods for both mile and half-mile tracks. 

 (As an assistance to surveyors in making a true curve, 

 see details figs. 6 and 7.) This plan is susceptible of being 

 worked by anyone with tape-line and wire, but, as it is 

 necessary to get the ordinates at exactly right angles to 



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 Fig. 3 — Regulation Half-Mile Track. Engineer s Plan. 



the chords, and but a slight deviation therefrom would 

 affect the curve, I strongly advise all amateurs to adopt 



The Amateur's Plan, 



which is so plainly illustrated in figs. 2 and 8. Having 

 laid out the straight lines, as indicated, all that is then 

 necessary, for a mile track, is a piece of wire, four hun- 

 dred and twenty feet two and one-eighth inches long 

 (420.17 feet). From a stake driven at the intersection 

 of the long middle line with the line that runs from the 

 commencement of the turn on one stretch to its com- 

 mencement on the other, stretch this wire at any angle 

 as many times as you like (the oftener the better) and 

 its end will be a point on the turn. If the wire is held 

 level it will be impossible to make a mistake in this sim- 

 ple method. If the ground is not level (slight inequal- 



