21. That the action of the stomach and its fluids is the same on all kinds of diet.
22. That solid food, of a certain texture, is easier of digestion than fluid.
23. That animal and farinaceous aliments are more easy of digestion than vegetable.
24. That the susceptibility of digestion does not, however, depend altogether upon natural or chemical distinctions.
25. That digestion is facilitated by minuteness of division and tenderness of fibre; and retarded by opposite qualities.
26. That the ultimate principles of aliment are always the same, from whatever food they may be obtained.
27. That chyme is homogeneous, but variable in its colour and consistence.
28. That, towards the latter stages of chymification, it becomes more acid and stimulating, and passes more rapidly from the stomach.
29. That the inner coat of the stomach is of a pale pink colour, varying in its hues, according to its full or empty state.
30. That, in health, it is sheathed with mucus.