 and the set of references to "mereological essentialism"
are disjoint from the set of references to "Whitehead".  If you
find what he says, please send the exact quotation to the list.

CP&gt; Sorry a typo- I meant 'extensionalism' not 'essentialism', hence my
comments on parts (rather than change) - Look at p.81 Section 2.9
Non-classical extensional mereologies and then Section 2.9.1 Whitehead's
Mereology of Events.

In any case, I am not happy with using mereology as a foundation
for ontology.  For conti