How to read Chart Data source

Hi folks.

I am trying to determine how to read the source data range for a specific curve on an existing Excel X-y scatter chart. I know how to reference the chart and the seriescollection element, but can't sort out how to extract the range. I have found lots of references on how to set the range, but I am trying to do the opposite. Can anyone give me a hint on how to read the range or the address thereof into a VB variable?

Thx