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Charles Thilorier was a scientist who gave the earliest description of dry ice, the solid form of carbon dioxide. In 1834 he opened a pressurized container of liquid carbon dioxide, only to find that the cooling produced by the rapid evaporation of the liquid yielded a "snow" of solid CO₂. He is credited with the discovery of CO₂.

References

• Duane H. D. Roller; M. Thilorer (1952). "Thilorer and the First Solidification of a "Permanent" Gas (1835)". Isis 43 (2): 109–113. doi:10.1086/349402. http://links.jstor.org/sici?sici=0021-1753%28195207%2943%3A2%3C109%3ATATFSO%3E2.0.CO%3B2-9.  
• Charles Thilorer (1835). "Solidification de l'Acide carbonique". Comptes rendus 1: 194. http://gallica.bnf.fr/ark:/12148/bpt6k29606/f194.table.