92. Wherein lies the difficulty of proving a negative? [O]

93. Can any limits be assigned to the possible unification of the sciences? [O]

94. Are the results of inductive inference necessarily certain? [O]

95. The method of deductive science is hypothetical. Explain and discuss. [O]

96. "The uniformity of Nature can never be more than a working hypothesis." Explain and criticise.

97. "Without speculation there is no good and original observation." Why? [O]

98. Can the provinces of induction and deduction be kept separate? [O]

99. How far is the relation of logical dependence identical with that of causation? [O]

99A. Discuss the position that the forms of Logic are meaningless apart from their application.