I am reading the wonderful "The Texts of Early Greek Philosophy" (Daniel W. Graham).
There are frequent excerpts from Simplicius' commentary on Aristotle's Physics.
I would like to look up the excerpts in translations of Simplicius' work (as provided by Bloomsbury press, for example).
The excerpts in Graham's work are cited in this manner - "Simplicius Physics 23. 21-29".
However, the numbering system for the translations of Simplicius' work are of the form "1.3, 1.4, ...", etc., up until 10.
So how can I map Graham's numbering system onto the translation?