A rapid procedure for dehydrating and clearing siliceous sponges (Hali
clona aquaeductus) and calcified corals (Swiftia exserta) with 2,2 dim
ethoxypropane and methyl salicylate has been developed. This modificat
ion of the Muller and Skinner method offers rapidity, preservation of
tissue integrity, reproducibility, and improved staining quality.