William Ripley Nichols
William Ripley Nichols ( April 30 , 1847 – July 14 , 1886 ) was a noted American chemist . 
<triplet> William Ripley Nichols <subj> April 30, 1847 <obj> date of birth <subj> July 14, 1886 <obj> date of death <subj> American <obj> country of citizenship