Notes from Viktor Hamburger's lecture. Trinkaus continues notes from page 57 and 58 on the copulation behavior of squid. He starts a new section on "Egg Laying"
Notes from Oscar Schotte's lecture. Trinkaus takes notes on the "layers of the egg" with a diagram, then details the work of Chambers on the anatomy and structure of the echinoderm egg
Notes from Oscar Schotte's lecture. Trinkaus draws 4 labeled diagrams of Chamber's work on fertilization in starfish
Notes from Oscar Schotte's lecture. Trinkaus continues his notes on the history of research on echinoderms, including information on Jacques Loeb, Hans Driesch, and Theodor Boveri. Trinkaus begins notes on the "Development of the Egg" with information on "inherent factor or potencies (Internal factors)"
Notes from Hubert Goodrich's lecture. Trinkaus' notes on 'Types of eggs', 'Egg membranes', and 'Spawning periods'
Notes from Oscar Schotte's lecture. Trinkaus continues his notes on the echinoderm egg with the determination that "Therefore this determining subst. is located in something other than pigment." He creates four categories for his notes on this page: 'Micropyles', 'Position of the Germinal Vessicle', 'Polar Bodies', and 'Fixation of Oocytes on the walls of the Ovary'
Notes from Viktor Hamburger's lecture. Trinkaus continues his notes on the derivatives of the 2d cell, then makes a list of derivatives of the "4d cell", "From larva", and "Larval organs lost"
Notes from Donald Costello's lecture. Trinkaus continues his notes on centrifugation of the egg with information on the effects of centrifugation on Asterias and Nereis (with diagram of "Centrifuged Nereis Egg")
Notes from Roberts Rugh's lecture. Trinkaus begins with an outline, "I. Injection of pituitary causes liberation of sperm within 24 hours in male frog" and "II. X Rays"
Notes from Viktor Hamburger's lecture. Trinkaus begins notes on "Development of the Annelidas" with a three-point list of features of "Annelida & Mollusca", then begins a list of features of "Hydroides (Eupomatus)"
Notes from Roberts Rugh's lecture. Trinkaus continues his notes from the previous page on the effects of X Rays on amphibian eggs
Faculty and students in the 1899 Physiology course at the Marine Biological Laboratory in Woods Hole, MA