twelve thousand shells

LITIn 1909 Paul Friedländer worked up the hypobranchial glands of 12,000 Murex brandaris snails and got 1.4 g of pure pigment. Elemental analysis showed bromine; the dye was 6,6′-dibromoindigo, C₁₆H₈Br₂N₂O₂ (Friedländer, Ber. Dtsch. Chem. Ges. 42, 765, and Monatsh. Chem. 30, 247, both 1909).

COMPUTEDSo it is about 8,600 snails per gram, not 12,000 per gram: 12,000 shells made 1.4 g. Each snail gives about 0.12 mg. The molar mass is computed below from standard atomic weights.

INVENTEDThe mosaic: an orange core (the living gland, before light turns it) set in purple tesserae, set in void. Each harvest lays tiles. The purple shell grows only as fast as the arithmetic allows.

harvest 100 shellsharvest 1,000new mosaic

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