rubber, India rubber, Indian rubber, latex, caoutchouc, whalebone, gum elastic, baleen, natural rubber; neoprene, synthetic rubber, Buna- S, plastic.

[a]Quisquis iter tendis, vitreas qua lucidus undas Speluncae late Thamesis praetendit opacae; Marmorea trepidant qua lentae in fornice guttae, Crystallisque latex fractus scintillat acutis; Gemmaque, luxuriae nondum famulata nitenti Splendit, et incoquitur tectum sine fraude metallum; Ingredere O! rerum pura cole mente parentem; Auriferasque auri metuens scrutare cavernas.

[Note A: LaTex markup $\root 4 \of {1 \over 100} = {1 \over 3.2}$ ] Theory of the Moon's Origin.