  In this Comment I discuss two incorrect statements which were made in the
paper "Silver nanoparticle array structures that produce remarkably narrow
plasmon line shapes" [J. Chem. Phys.120, 10871 (2004)] by Zou, Janel, and
Schatz (ZJS). The first statement is about the use of quasistatic approximation
in my earlier work on the similar subject, and the second statement concerns
the possibility of exact cancellation of radiative relaxation in periodical
chains of nanoparticles. The relationship between the quasistatic
approximation, the dipole approximation, and the approximation due to Doyle
[Phys. Rev. B39, 9852 (1989)] which was used by ZJS is clarified. It is shown
that the exact cancellation of radiative relaxation cannot take place in the
particular geometry considered by ZJS.
