amount of time and energy to the writing of a book. I have done my
best to guard against errors, but of imperfections I am fully conscious.
My task has been lightened by the constant encouragement of my
wife, and by the great kindness of fellow naturalists to whom I have
turned for advice and assistance.
With few exceptions the photographs of spiders have been taken by
W. H. T. Tams from specimens with which I have supplied him. I owe
him a deep debt of gratitude for his patience, kindness and skill. The
exceptions are Pl. II, figs. 7 and 8, Pl. VI, fig. 6, Pl. VII, fig. 1. Pl.
VIII, fig. 8, by H. Main, Pl. XIV, fig. 2, Pl. XV, figs. 2 and 4, by S.
Ballance, and Pl. XVIII, fig. 2, by E. A. Robins, to all of whom I owe
my best thanks.