Ingredients

on PAGE THIRTEEN, Sayadaw concludes the introductory section on materiality-mentality with the Buddha's explanation of 'what is materiality' from the Mahagopataka Sutta, that it is composed of 'The four great elements', namely: Earth, water, fire and wind.  Furthermore, there are 24 types of 'derived materiality', (these from the Abhidahamma) namely:

    Physical sense-organs of: seeing, hearing, smelling, tasting, body

    Physical sense-objects: form, sound, odour, taste, bodily impacts

    'Bodily impacts' photthabba are generally omitted in this list, because these physical objects of body-sensitivity are identical with the afore-mentioned solid element, heat and motion element. Hence their inclusion under 'derived materiality' would be a duplication.

        femininity itthindriya

        virility purisindriya

        physical base of mind hadaya-vatthu

        bodily expression kāya-viññatti s. viññatti

        verbal expression vacī-viññatti

        physical life rūpa jīvita s. jīvita

        space element ākāsa-dhātu

        physical agility rūpassa lahutā

        physical elasticity rūpassa mudutā

        physical adaptability rūpassa kammaññatā

        physical growth rūpassa upacaya

        physical continuity rūpassa santati s.

        decay jarā

        impermanence aniccatā

        nutriment āhāra

It's like unbaking a cake. We've been eating and baking things, the ingredients of which were, until now, unknown.