Still Image

Notes from Donald Costello's lecture. Trinkaus continues from the previous two pages with his series of diagrams on the development of the barnacle embryo, including information on the cell lineage

Notes from Viktor Hamburger's lecture. Trinkaus concludes his notes for this lecture with a diagram of Crepidula

Notes from O. Schotte's lecture. Trinkaus begins his notes on "Potencies in Regenerating Tissue" with information on the process of development and begins a list of "Regenerative problems" with two points, "1. Causes of regeneration" and "2. Origin of the material of the blastema"

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 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