John P Trinkaus' MBL Embryology Course Notes, Notebook I, 1939. Page 86

Notes from Oscar Schotte's lecture. Trinkaus begins notes on the 'metamorphosis of Echinoderms' with four diagrams of an echinoderm embryoLecturer: O. Schotte, Lecture "Metamorphosis of Echinoderms" (Information taken from the 1939 Embryology Course Book)Page 86 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, MANote