$KN$ Sigma Terms, Strangeness in the Nucleon, and DA$\Phi$NE
  Expanded and updated version of a talk originally presented at ``IVth Int. Symp. on Pion--Nucleon Physics and the Structure of the Nucleon'', Bad Honnef, 9--13 September 1991, originally published in $\pi N$ Newletter 6 (1992) 21--32.   Table of contents:   1. Introduction.   2. $\sigma$--terms and ``measurements'' of the strange--quark scalar density of the nucleon.   3. Methods of extrapolation to $q^2 = t = \omega^2 = 0$: a subjective review:   3.1. The ``improved'' Altarelli--Cabibbo--Maiani method.   3.2. The Fubini--Furlan analysis of meson-nucleus scattering lengths.   3.2. The ``unitarized'' version of the Cheng--Dashen theorem.   4. Capabilities for a $\bar{K}N$--scattering experiment at DA$\Phi$NE.   5. ``Envoi''. 
Paolo M. Gensini (Dip. di Fisica, Universit\`a, and Sez. I.N.F.N.,   Perugia, Italy)