§ 235. Whenever provided for in this article, except as specifically
excepted in paragraph d of the preceding section, the word "platinum"
may be applied by spelling it out in full or by the abbreviation
"plat.", the word "iriduim" may be applied by spelling it out in full or
by the abbreviation "irid.", the word "palladium" may be applied by
spelling it out in full or by the abbreviation "Pall", the word
"ruthenium" may be applied by spelling it out in full or by the
abbreviation "Ruth.", the word "rhodium" may be applied by spelling it
out in full or by the abbreviation "Rhod.", and the word "osmium" may be
applied by spelling it out in full or by the abbreviation "Osmi.".