Item 45 - Letter from R. H. Hutton to Henry Sidgwick

Asks when Sidgwick reviewed Spencer, and declares that he would like to read the review. Puts forward the claim that he and Spencer mean the same thing by a priori. Discusses the qualities of judgments that are a priori as opposed to those that are not; the perception of a leaf's greenness and a boy's cleverness, are not, in his opinion a priori judgments, whereas the judgment that an action is good or bad is a priori, because he claims to 'fully understand [sic] the action, independently of any comparison of it with other actions of a like kind'.