concatenations of the virtual and actual: latour?

I need help finding a section of text in Latour’s Reassembling the Social. My notes or my memory must be extremely poor because I think I can remember reading something in Latour’s book along the lines of: ‘chains of concatenations of the virtual and actual’ but I don’t know where it is.

I have just spent the last hour and a half trying to find it by flicking through my copy of the book looking for underlined sections but I can’t find it. I need to read the book again anyway, I guess… But if anyone knows off the top of their respective brilliant, super-sexy, I-am-in-your-debt head where it is in the book, or even if they can also remember a similar line exists (so I know I am not simply inventing things), I would be very grateful if you’d let me know.

Oh, and Whitehead is indeed the bridge across Latour, Deleuze and to a lesser extent Foucault in terms of an event mechanics. (whitehead! w00t!)

EDIT: Page 59 Latour discusses a cartogarphy of “the world made up of concatenations of mediators where each point can be said to fully act.” He footnotes this with a remark that in “Deleuze’s parlance” it has “actualized virtualities.”

So I was pretty close!