Note 13 — PREFACE
Reading edition
Thus in the first volume of the Laws we find duads on p. 228, 15; 294, 27; triads on p. 50, 9. 27; 230, 4; 264, 20; 288, 28; tetrads 40, 21; 54, 7; 64, 1; 240, 24; 256, 4, &c.; 272, 25; 274, 3, &c.; pentads 30, 21; 50, 32; 90, 29; 102, 6; hexads 68, 11; 248, 7: a heptad 134, 9; an ennead 16, 20.