The present article is intended to display a procedure of morphemic analysis that makes maximum use of morph-segmentation, and classifies morphs into morphemes in terms of recurrent partials within a fixed frame of reference. The frame of reference consists of a text in which substitutions are made at various points and the resulting other changes are observed. Thus, in English we find one boy, one girl, one man, but two boys, two girls, two men. From this one separates out the partials one, boy, girl, man, two, -s, and replacement of a by e (this example is deliberately put in orthographic terms); -s and the replacement of a by e are then grouped together in a class of morphs, a morpheme. We can now give this morpheme a label, if we wish, such as plural, but we could just as well call it something else; the referential meaning (meta-linguistic or ‘real’ meaning) does not concern us in the analysis, but there is no need to ignore it in choosing our labels.