Lepidoptera feathers and hair, bran, semolina and flour (possibly preferring wheat flour), biscuits, casein, and insect specimens in museums. Even though most butterflies and moths affect the economy negatively, some species are a valuable economic resource. The most prominent example is that of the domesticated silkworm moth ("Bombyx mori"), the larvae of which make their cocoons out of silk, which can be spun into cloth. Silk is and has been an important economic resource throughout history. The species "Bombyx mori" has been domesticated to the point where it is completely dependent on mankind for survival. A number of wild moths such
Nicolas Mori programmes were headed by the grim device of a death's head and the legend Memento Mori. As a performer 'Mori's attitude had the grace of manly confidence. His bow arm was bold, free, and commanding, and the tone he produced was eminently firm, full, and impressive. His execution was alike marked by abundant force and fire, by extraordinary precision and prodigious facility, but lacked niceties of finish and the graces and delicacies of expression' (Quarterly Mag. Music, iii. 323). He left behind him a son, Francis Mori (1820-1873), the composer of a cantata, entitled 'Fridolin;' an operetta, with words by