.
ERRATA.
p. 14, line 2, for "states" read "allows us to infer."
p. 14, line 7, after "*3’03" insert "*1’7, *1’71, and *1-72."
p. 15, last line but one, for H function of f/JX" read "function rpx."
p. 34, line 15, for "x" read "R."
p. 68. line 20, for Ie !,leA" :"’.7U.ti .. classes of cla.sses."
p. 86, line 2 after "must" insert "neither be nor."
p. 91, line 8, delete "and in *3.03."
p. 103, line 7, for "assumption" read "assertion."
p. 103, line 25, at end of line, for "q" read "r."
p. 218, last line but one, for "A" read "A " [owing to brittleness of the type, the
same error is liable to occur elsewhere].
p. 382, last line but one, delete "in the theory of selections (*83’92) and."
p. 487, line 13, for" *95" read "*94."
p. 503, line 14, for "*88.38" read "*88.36."
