Photographs

Notes from Oscar Schotte's lecture. Trinkaus continues his notes from the previous page on parthenogeneis with some thoughts from F.R. Lillie, and then the beginning of an outline on the 'Processes after fertilization'

Notes from Oscar Schotte's lecture. Trinkaus continues his outline from the previous page on parthenogenesis with information on Delage, Battalion, and 'Parthenogenesis can be produced by these methods"

Notes from Oscar Schotte's lecture. Trinkaus concludes his notes on parthenogenesis with a few lines on androgenesis

Notes from Frank Lillie's lecture. Trinkaus continues his notes from the previous page on feather development with sections 'Ectodermal constitutuants of the feather' and 'mesodermal constituants of the feather'

Notes from Oscar Schotte's lecture. Trinkaus begins his notes on 'Experimental embryology of the Echinoderms" with historical background from Hans Driesch (with diagram), Boveri, and Horstadius

Notes from Donald Costello's lecture. Trinkaus begins the lecture notes with a line on historical work, then starts an outline with "Fertilization:--Union of Egg & Sperm". "Conditions of the Gametes" is next, and Trinkaus begins a list of 5 groups (the first two are on this page)

Notes from Donald Costello's lecture. Trinkaus concludes his notes on the centrifugation of eggs with information on "Isolation of blastomeres"

Notes from Donald Costello's lecture. Trinkaus continues his notes on spiral cleavage with information on the development of micromeres, the direction of cleavage and six cell lineage diagrams

Notes from Donald Costello's lecture. Trinkaus continues his notes on spiral cleavage and cell lineage with information about Crepidula and a cell lineage chart (cell phylogeny)

Notes from Mary Rawles' lecture. Trinkaus continues his notes from on transplantation experiments for bird pigmentation from the previous page. Trinkaus gives details about the experimental procedure and pays special attention to the role of the neural crest

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)"