Notes from Charles Packard's lecture. Trinkaus concludes his notes from Packard's morning lecture on the history of embryology (begin page 81) with some final thoughts from C.O. Whitman about epigenesis, heredity, and development, ending with the quote, "Facts without theory is chaos."Lecturer: C. Packard, Lecture "Topics from the history of embryology" (Information taken from the 1939 Embryology Course Book)Page 85 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