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:
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"
PDF: Dead Link (If you are interested, please leave a comment)