Sentence:  ... the barriers, which to them limit the view, and give to it, together with the contraction, all the distinctness and definite outline of limitation, are, in nine cases out of ten, the product of their own defective and <WSD>aberrating</WSD> vision, and not real barriers at all. 
Meaning of the word marked with <WSD> tags:  To go astray; to diverge; to deviate (from); deviate from. (mid 18th century)<ref name=SOED>(page=4)</ref>