I am sorry that Google provides scans of such poor quality! People working for them seem unable to center the page on the scan so that ALL the text can be read (it shouldn't be so difficult, it seems...And obviously nobody checks the finished work) In addition of a number of pages scanned this way (cutting a stripe that makes all the beginning of lines unreadable), this book had a numer of fold-out plates...can you believe that they were scanned all folded, without opening them?
As if this weren't enough, a number of pages are scanned totally out of focus, and another few were only partially scanned as the book was removed from the scanner too soon... I would imagine the book had been just fet to an automatic machine, but no! There is a human finger scanned together with the text, so it was a person who did that.
I have no words to define such a poor work. Google shouldn't attach its name to such poor quality work.