Nezikin

Since it was the chief repository of "civil" law, it was simply called Massekhet Nezikin ("Tractate Damages").

Next comes Makkot, as it is a continuation of Sanhedrin's subject matter in terms of criminal procedure.

Then, Shevuot, which continues the general topic dealt with in Makkot of the false testimony.

After outlining the main points of civil and criminal law, Eduyot follows to fit it all into a halakhic framework.

Finally, Horayot brings the discussion from lofty heights to a humble note, highlighting the concept that even the Sages and battei din can err.