Faults to be corrected before reading this Volume.
Page 13, line 9, for def. 7 read def. 10.
45, last line, for pr. 19 read pr. 29.
54, line 4 from the bottom, for black and red line read blue and red line.
59, line 4, for add black line squared read add blue line squared.
60, line 17, for red line multiplied by red and yellow line read red line multiplied by red, blue, and yellow line.
76, line 11, for def. 7 read def. 10.
81, line 10, for take black line read take blue line.
105, line 11, for yellow black angle add blue angle equal red angle read yellow black angle add blue angle add red angle.
129, last line, for circle read triangle.
141, line 1, for Draw black line read Draw blue line.
196, line 3, before the yellow magnitude insert M.
