John P Trinkaus' MBL Embryology Course Notes, Notebook II, 1939. Page 6

Notes from Donald Costello's lecture. Trinkaus illustrates elements of Lillie's fertilization theory and includes "Objections to Theory" sectionLecturer: D. P. Costello, Lecture "Fertilization." (Information taken from the 1939 Embryology Course Book)Page 6 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