Color blindness all variations in human color vision involve the red and green receptors in male eyes. It is very rare for males or females to be "blind" to the blue end of the spectrum. The first scientific paper on the subject of color blindness, "Extraordinary facts relating to the vision of colours", was published by the English chemist John Dalton in 1798 after the realization of his own color blindness. Because of Dalton's work, the general condition has been called "daltonism", although in English this term is now used only for deuteranopia. Color codes present particular problems for those with color
Richard Chenevix (chemist) how he had, correctly, isolated the element palladium. Chenevix bore no apparent animus in later meetings between the two. How damaging the affair was to Chenevix's reputation as a chemist in the scientific world has been a discussion point for different writers. In 1808 came his criticism of Abraham Werner's classification of minerals. In 1809, he produced his final scientific paper, a method to produce acetone by distilling acetates. An English translation of a paper he wrote in 1808 for "Annales de Chimie" was published in London in 1811 as "Observations on Mineralogical Systems". Chenevix was a member of a