presence of oxygen gave the cream-colored, nicely crystalline peroxide IV, ni. p. 115-116", lit. 109-109.507 and 113-116" dec." A sample of peroxide IV (1 X Ji benzene solution) was placed in the variabletemperature cavity of the dual-sample cavity and its signal was iiiodulated at 400 CPS In the other cavity, niodulated at 100 kc. ps, was placed a sample of the 2, 6-di-t-butyl-4-t-butoxyphenoxy radical VI1 prepared by the saine procedure as for V. ...
