20. Influence of the theory of Probability.
21, 22. Modal syllogisms.
23. Popular modal phraseology.
24–26. Probable and Dialectic syllogisms.
27, 28. Modal difficulties occur in Jurisprudence.
29, 30. Proposed standards of legal certainty.
31. Rejected formally in English Law, but possibly recognized practically.
32. How, if so, it might be determined.