Has light grey or brown close thick wool half an inch deep without any top hair, with a rather thick spongy pelt.
Dobereiner discovered the combination of SO 2 and 0 into SO 3 by means of spongy platinum.
Moreover, unless the conditions are closely watched, it is liable to be thrown down in a spongy form.
For most of these the lightest spongy but sweet turfy peat must be used, this being packed lightly about the roots, and built up above the pot-rim, or in some cases freely mixed before use with chopped sphagnum moss and small pieces of broken pots or nodules of charcoal.
3.1 Palisade Tissue and Spongy Cells 3.2 Cell Formations 3.3 Blade/Lamina and Stalk/Petiole 3.4 Venation