The original PDF had many scanning artifacts, and was bloated (24.8 MB). My PDF version has a (nearly perfect) OCR, and the images were manually cleaned. Here are some comparison shots:
Page 33:
http://www.imagebam.com/image/3be075180016769
http://www.imagebam.com/image/5cf68f180016765
Page 36:
http://www.imagebam.com/image/587b80180016778
http://www.imagebam.com/image/eb96b7180016773
Page 75:
http://www.imagebam.com/image/fb5d65180016787
http://www.imagebam.com/image/460834180016782
Page 78:
http://www.imagebam.com/image/44925c180016791
http://www.imagebam.com/image/eec321180016789
My PDF also comes in at 5.15 MB.
Fix Notes: PDF Page (Actual Page):
page 30 (25):
but the absence of references to the heated controvery of 1850-73 seems to indicate that they were not familiar with this literature
- Changed to "controversy"
EPUB: https://mega.co.nz/#!XV4kiCrZ!JcQf6DCjH7hKJWIxVjijgFjTXrlChGQ9I6axyAwlf0A
PDF: Dead Link (If you are interested, please leave a comment)