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fure, and lay down upon your Paper, as you were directed at your other Stations; then direct your fights to your fixth Station at z, and ftrike a Line by the Edge of your Index for your S ationary Line, which take from your Scale, and set from y to z; where plant our Table by the foregoing directions.
7. Your Table being planted at z, direct your fights to all the Angles in view, and ftrike Lines by the Edge of your Index thereto, as to O, P, Q, R, S, T, and meafure their diftances on the Ground from your place of ftanding; which feveral diftances take from your Scale, and fet from Z, to O, P, Q, R, S, T, where make pricks with your Compaffes point; which done direct your fights to your 7th, or laft Station, drawing a Line by the Edge of your Index for the laft Stationary Line; then measure the diftance Z*; which take from your Scale, and fet from Z to *, (as before taught) where plant your Table; which done, di rect your fights to the Angle N, which diftance reafure on the Grourd, and then take from your Scale and fet from * to N, where make a prick; fo have you prickt off all the Angles in the Field.
8. Lastly, From the feveral pricks, as from A to B, from B to C, and fo to D, &c. draw Lines therefrom till you come again to A, which fhall include the Mountainous Field: which was required.
And here you may obferve, that the Chain being drawn over all the Hills and Dales, muft neceffarily produce a larger Plot, viz. more Ground, then going round about the Hedges all the way upon level or even Ground to plot the fame: Hence I may affirm,that this way ought to be practifed by Surveyors, from which Map the true Num ber of Acres is found that the faid Ground containeth.
Concerning Shifting of Paper.
It very ordinarily falls out in practice, with your Table, as it is covered with Paper, is too little in feveral Cafes, efpecially in great Grounds; in fuch Cafes when you have proceeded as far as you can, till the Lines run off your Table or Paper, you muft fhi't your Paper, and put a fair fheet upon the Table.
Firft then, upon your laft Stationary Line which runs off your Table, obferve to fhift that Sheet fo far off or befide the Ta ble,that your laft Station marked thereupon, may be marked juft upon the Table to which Sheet in this order glew a fair Sheet with Mouth Glew, and fo faften them down with the Frame of the Table
Second, Lay a Ruler upon that part of the Stationary Line, from the Station, which as I faid before, is just upon the Edge of the H 2 Table,
Table, and draw or augment that Line on the fair Paper, upon which Line prick off your Stationary diftance.
Third, Upon this Stationary Line lay the Edge of your Index, then turn the Table upon the Head of your Staff, til through the fights you fee the laft Station you directed to; fo will your Table be rectified to proceed with your work.
Fig. 99. Admit the following Figure GH JKLMNOPQRST UW X, represent a Field to be plotted by the plain Table, which is fo large that it cannot all be plotted on the Table; and becaufe I would have as much upon the Table as it will bear, I begin as near the Edge of my Table as I can; let us fuppofe the Table within the Frame to be understood by the Line YA, therefore make choice to begin at A, planting my Table there, and directing iny fights to F, I cafure the Stationary difance AF, which is almoft the Length of the Table; then I come back to my fift Station, and there again plant my Table in the fame pofture I did at firft, fo directing the fights to B, taking the Angles by the way, then to direct my fights to C, where I plant my Table, taking my Angles therefrom that are in view; next I direct the fights