On page 76, smybols has been changed to symbols.
On page 93, denouments has been changed to denouements.
On page 122, distinguising has been changed to distinguishing.
On pages 84, 124, 126, 135 and 146 dugout has been changed to dug-out.
On page 135, descendents has been changed to descendants.
On page 135, continous has been changed to continuous.
Minor silent changes have been made to regularize punctuation; all other spelling, hyphenation and punctuation have been retained as typeset.