Francis John Richards, 1901-1965

Francis John Worsley Roughton, 1899-1972.

Biosynthetic Pathway of Desmosines in Elastin By GILLIAN FRANCIS, RHYS JOHN and JOHN THOMAS

1. Elastins purified by various methods from the ligamentum nuchae and the lungs of cattle of various ages were analysed for amino acid compositions and lysine-derived cross-links. 2. In fully mature elastins from adults the main cross-links were desmosine, isodesmosine and lysinonorleucine and the so-called aldol-condensation product. Trace amounts of merodesmosine were also found. 3. During t...

“An Altercation Full of Meaning”: The Duel between Francis B. Cutting and John C. Breckinridge

A Duel!” In late March of 1854, the northern press burst with the news. A duel had allegedly taken place between two members of the House of Representatives—Francis B. Cutting of New York and John C. Breckinridge of Kentucky. Confusion and anticipation reigned, and a flurry of rumors circulated. Had Breckinridge been shot in the neck? Was he killed or wounded? Did Cutting emerge victorious? Or ...

Chemistry: Richards and Boyer

remains to be done in order that perfect certainty may be attained, nevertheless the outcome must be regarded as promising in pointing toward an adequate and convenient method of separating gallium from other metals. Three fractional samples of the chloride discussed in the previous section were analyzed, using the usual methods employed in Harvard University in order to make a preliminary dete...

Johannes Holtfreter (1901-1992)

Johannes Holtfreter [6] made important discoveries about the properties of the organizer [7] discovered by Hans Spemann [8]. Although he spent much time away from the lab over many years, he was a productive researcher. His colleagues noted that the time he spent away helped revitalize his ideas. He is credited with the development of a balanced salt medium to allow embryos to develop; the disc...