 One way to answer the first question is to understand “form of judgment” as not being concerned with the representation that might be involved in a judgment, but rather with the content of the judgment, i.e. with what the judgment is representing to be the case. Contents of judgments can be seen as propositions, and these can be understood as entities that are structured, for example Russellian propositions. Such propositions are ordered sets whose members are objects and properties. How such a conception of (L4) relates to (L2) will in part depend on how one thinks of the logical constants in Russellian propositions. If they are higher order properties or functions that are members of these propositions alongside other objects and properties then presumably the logical constants have content. But this seems to be in conflict with an understanding of (L4) as being concerned with the form that is left once we abstract from all content. If would seem that on such an understanding of (L4) one can’t closely associate ‘form of judgment’, understood as what’s left once we abstract from all content of the judgment, with logical constants if the latter have content.