“…Investigations by Arny and Leben (2, 3, 4,). Gassner (12), Pichler (20, 21), Purdy' and Holton (23), and Lehman (77) have shown that some mercurial fungicides exhibit vapor action. Within the bulk of treated seed, evaporation and condensation of mercurial are simultaneously taking place from and onto the surfaces of the kernels.…”