The SciencesHarmony and Discord with Optical StudiesLecture Delivered at the Stevens Institute of TechnologyBy C. F. Brackett on July 15, 1876AdvertisementABOUT THE AUTHOR(S)Recent Articles by C. F. BrackettThe Effect of Invention upon the Progress of Electrical ScienceElectricity, Light, and HeatElectricity, Light, and Heat