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Notes from Frank Lillie's lecture. Trinkaus begins his notes on Lillie's lecture on 'The development of feathers' with some information about how feathers grow (including a graph)

Notes from Oscar Schotte's lecture. Trinkaus continues his notes on animalization with diagrams and information about different compounds (includes diagrams), and notes on Runstrom's and Lindahl's experiments

Notes from Viktor Hamburger's lecture. Trinkaus continues his notes on the anatomy of Longfin shore squid (Loligo pealeii) from pages 44-47

Notes from Charles Packard's lecture. Trinkaus continues his notes from Packard's morning lecture on the history of embryology (begin page 81) with information on Swammerdam, Malebranche, Bonnet, Leeuwenhoek, and Spallanzani

Notes from William Ballard's lecture. Trinkaus continues his notes on the embryology of Styela with information on fertilzation (includes two diagrams)