John P Trinkaus' MBL Embryology Course Notes, Notebook II, 1939. Page 65

Notes from William Ballard's lecture. Trinkaus continues his notes on the embryology of Styela with a diagram of "regular cleavage" and notes on "Gastrulation: Similar to that of Amphioxus", then starts a new section on "T. Chow Tung '34"Lecturer: W. W. Ballard, Lecture "General Embryology of Tunicates" (Information taken from the 1939 Embryology Course Book)Page 65 of 72 from the second 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