  We present an abstract functional analytic formulation of the celebrated
$\dive$-$\curl$ lemma found by F.~Murat and L.~Tartar. The viewpoint in this
note relies on sequences for operators in Hilbert spaces. Hence, we draw the
functional analytic relation of the div-curl lemma to differential forms and
other sequences such as the $\Grad\grad$-sequence discovered recently by
D.~Pauly and W.~Zulehner in connection with the biharmonic operator.
