Notes from Oscar Schotte's lecture. Trinkaus continues his notes on Lindahl's experiments, and writes a lot about the effects of different chemicals on different stages of developmentLecturer: O. Schotte, Lecture "Experimental embryology of Echinoderms II" (Information taken from the 1939 Embryology Course Book)Page 113 of 113 from the first notebook of lecture and laboratory notes that John P. Trinkaus took during his time as a student in the Marine Biological Laboratory Embryology Course in 1939 in Woods Hole, MA