Notes from Viktor Hamburger's lecture. Trinkaus continues his notes on the Longfin short squid (Loligo pealeii) from page 44 and 45 with further notes on cleavage and the beginning of a new section on the "formation of shell gland"Lecturer: V. Hamburger, Lecture "The development of the squid (Loligo)." (Information taken from the 1939 Embryology Course Book)Page 46 of 113 from the first notebook of lecture and laboratory notes that John P. Trinkaus took during his time as a student in the Marine Biological Laboratory Embryology Course in 1939 in Woods Hole, MA