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On Costello's "Methods for obtaining and handling marine eggs and embryos" (MBL Woods Hole 1957). On Holtfreter's upcoming embryology course at the Bermudas.
On his plans for essays on the history of the organizer. On Holtfreter's work on the organizer with Spemann, Mangold et al. in 1932.
On Hamburger's corrections of Holtfreter's manuscript. On visiting Max Delbrueck at Nashville, Tennessee.
On ideas for their chapter in 'Analysis of Development'.
Satirical comment on the manuscript.
Handwritten note from Gottlieb to Hamburger on a typed letter from Gottlieb to Dr. John Blake