Can water be felt? An Introduction To Material Realities And The Sense Of Touch. You can try to read this post cold, or you may read the previous three posts at my page. http://www.buddhanet.net/pdf_file/abhidhamma.pdf
Temporary Nature p 318
Atomic Theory History, p. 318
Four elements plus color taste, smell and nutriment pgs. 319-320
Top of page 330 mentions that flowing (apo) can not be felt and is inferred.
Page 330 has a mention if cardio theory (mind in the heart).
Lifetime of a Kalapa p. 334
Mind produced matter p. 343
Rupa (materiality) as groups (Kalapa) p. 354



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