2. Take 5.40 in your compaffes and lay from Beto C; take I chain in your compaffes, fet one foot in C and mark the line BC continued in c, draw an arch, and lay 1.10 on that arch from c to c, draw a line from C through the point at random. 3. Take 5.10 in your compaffes and lay from C to D; take I chain in your compaffes, fet one foot in D and mark the line C D continued in d, draw an arch and lay 1.12 on that arch from d to d, draw a line from D thro' d at random. 4. Proceed juft in the fame manner for all the other lines and angles of the field; and if you have done your work right your laft line HA will just come and join with the point A; which if it should go beyond the point A you have laid off fome of your angles too fmall; but if it falls fhort of the point A you have laid off fome of your angles too large; and that error must be corrected accordingly. To find the content. After you have drawn the plan juftly and truly, you may divide it into trapeziums and triangles, and fo let fall perpendiculars as is before taught, and thence find the content eafily. PRO EXAMPLE. Suppofe the two fides of a field were as in the following figure; it is required to find the angle included between them? B D A First, I ftand with one end of the chain in the angle A, and lay the chain along the hedge E AB, and put down a peg at the end of the chain at D. Secondly, I lay the chain along the hedge AC, and put down a peg at the end of the chain Cat E. Thirdly, Measure from the peg at E to the peg at D, and fuppofe it meafures 1.03; then look in the following table for 1.03. and you will find the angle to be 61 deg. 59 min. 42 fec. Or fuppofe the extent from D to E was 83 links; by the table you will find the angle to be 50 deg. 56 min. 6 fec.; and fo for any other extent. The following is a table of the degrees, minutes, and feconds, that is contained in any angle made by any number of links; radius being one chain, or 100 links. X 3 130 81 50 81 27 41 81 50 21 82 13 10 82 35 59 82 58 55 83 21 52 89 15 21 89 39 27 140 88 51 15 150 97 10 51 97. 36 57 160 106 15 37 106 44 26 107 13 14 107 42 17 08 11 31 170116 25 24 116 58 17 117 31 10118 180 128 18 58 128 58 190143 36 37 144 33 52 129 38 46 130 19 27 131 4145 29 32 146 28 18147 28 46148 31 92 3 49 90 28 11 90 52 41 91 17 II 98 3 3 98 29 19 98 55 42 99 22 13 99 48 50 108 40 54 109 10 29 49 119 45 55 140 91 41 52 92 6 32 92 31 24 92 56 16 93 21 78 6 1 78 28 12 86 4 45 II 37 102 3 58 22 42 28 101 28 101 36 36 9 10 30 110 40 18 111 10 36 111 41 3 122 5.24 122 41 19 135 20 12 136 5 50 154 19 22155 39 150 100 15 35 100 160 109 40 13 110 170 120 20 20 120 55 2121 30 36133 180 133 7 36 133 518134 35 190 150 42 18|151 51 37153 3 52 102 31 16 102 8112 11 51112 42 46 4123 17 5 123 53 27 48 136 52 11 137 39 43 157 2 35 158 31 50 21 |