Notes from Donald Costello's lecture. Trinkaus begins with notes on the history of research on the embryology of crustacea, including Mueller and Haeckel, including a small phylogeny of crustaceans, and some notes on the general embryology of the clade
Notes from Hubert Goodrich's lecture. Trinkaus' notes on the timing and efficacy of fertilization in sea water (with charts)
Notes from Viktor Hamburger's lecture. Trinkaus ontinues his notes on cell lineage studies with information on "An embryological System of independent units", with diagrams showing isolation of different parts of the embryo
Notes from Viktor Hamburger's lecture. Trinkaus continues his notes on E.B. Wilson's cell lineage studies with six sets of diagrams showing cell division in Patella
Notes from Viktor Hamburger's lecture. Trinkaus begins his notes on "Experimental Embryology of the Annelida & Mollusca" with information on the cell lineage studies of E.B. Wilson
Notes from Viktor Hamburger's lecture. Trinkaus continues his notes from the previous page on the work of Novikoff, and starts a new section on Horstadius (with three diagrams)
Notes from Donald Costello's lecture. Trinkaus creates another diagram of the anatomy of the crustacean embryo, then begins a section on research on the "Barnacle" (with diagram)
Notes from William Ballard's lecture. Trinkaus continues his notes from page 38 and 39 on gastrulation in Coelenterates. Starts a new section on development of Coelenterates following gastrulation, including diagrams
Notes from Viktor Hamburger's lecture. Trinkaus continues his notes on the Longfin short squid (Loligo pealeii) from page 44, with information covering egg-laying, fertilization, and cleavage. Diagrams of sperm penetration and polar bodies are included
Front cover of the John P. Trinkaus autobiography, "Embryologist"
Notes from Eliot Clark's lecture. Trinkaus begins his notes with information on "Microscopic observation of certain embryological Processes in the living adult mammal." concerning the circulatory system
Notes from Hubert Goodrich's lecture. Final page of notes from June 20, 1939 lecture, including 'Diff. between two species of Fundulus". Start of notes from Hubert Goodrich's lecture on June 21, 1939, including 'Promorphology of the egg'