Notes from W.R. Duryee's lecture. Trinkaus finishes his notes from page 33-36 on the appearance, nature, and action of chromosomes and the effects of different fixatives. Trinkaus begins a new note section on "Significance to Embryology", and underlines a passage: "This is of course against the idea of cytoplasmic inheritance"Lecturer: W.R. Duryee, Lecture "Colloidal organization of the egg nucleus." (Information taken from the 1939 Embryology Course Book)Page 37 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