Digital file.
I could only access a few pages online, and looking at the text version, there were only a handful of pages included, which implies there are probably problems with all the files. I did not download the pdf.
There is a version available on Hathi Trust which is public domain in USA, but whether the digital copy is better I don't know, as where I live I can not read it, for copyright reasons.
https://catalog.hathitrust.org/Record/100330391