A full-text version of the entire work (in a different edition) is available at:
https://archive.org/details/in.ernet.dli.2015.125862/page/n14/mode/2up.

An edition like Merton used is available to borrow:

https://archive.org/details/sartoris0000faul_o3m5.

Merton mentions Sartoris in his journals, see also:

http://www.merton.org/research/Quotations/details.aspx?id=889