Read to the Royal Society in May 1831 and printed in the Philosophical Transactions at page 299, "On a Peculiar Class of Acoustical Figures; and on certain Forms assumed by groups of particles upon vibrating elastic Surfaces" is Faraday asking why light powders behave differently from sand. His answer: air currents over the plate carry lycopodium to the antinodes while heavier grains stay on the nodes — the inverse Chladni effect, explained by fluid motion rather than the plate alone.
He then repeats the experiments in a vacuum receiver and under water, where filings and even grains of platina collect on the most violently moving parts, not the quiet ones.
The appendix, "On the Forms and States of Fluids on Vibrating Elastic Surfaces", is where the crispations appear: regular rectangular cells on a water- or diluted-ink-covered plate, larger for a low note, smaller for a high one, and moving once for every two vibrations of the plate. That halving is the subharmonic response now named after him. This scan is the 1859 collected volume.