These notes, supplementary to the necessarily brief review of Mevrouw van Lohuizen-De-Leeuw's meritorious work, do not at all seek to revive the exhaustive discussions of 1913 or to scrutinize any subsequent contributions of fact or opinion. The aim is simply to signalize the authoress's main propositions and to record a few such provisional comments as seem relevant. In view of some tendency towards a “general opinion” a new objectively elaborated interpretation has a claim to careful consideration: and it seemed permissible to include, on a reviewer's part, one or two partly novel observations. While awaiting some new evidence of a “knock-out” kind, scholars may give attention to any serious reasonings.