Chapter XXVII
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“and there is a further _possiblity_ that he was actually her” to _possibility_.
“The last letter refers _explicity_ to the loaded stick” to _explicitly_.
“unmounted precious stones _illictly_ obtained are difficult” to _illicitly_.
“weighed 231 pounds--more _that_ half a hundredweight in excess” to _than_.
(“What method did you employ to measure the strength of the peg.”) change the period to a question mark.
[ Chapter XXVIII ]
“being a liquid--is an an intensely poisonous substance” delete one _an_.
[Epilogue]
“followed my pilgrimage through the valley of the shadow, has been given” delete the comma.
[End of text]