Correspondence & Documents
Requesting tantalum foil.
On the opening of Hamburger's new lab facilities. On Hamburger's upcoming talk at Rochester on "Embryonic beginnings of behaviour".
On Holtfreter's recent experiments "to show that 'inducing agents' diffuse through a barrier of agar and of cellophane." On other induction experiments.
Detailed description (including several drawings) of Holtfreter's recent observations on Xenopus gastrulae. On induction.
On the program for the President's Symposium at the E. Lansing Meetings.
On reducing the length of chapters 9 & 10.
On his difficulties with graduate students.
Comments on the manuscript of 'Analysis of Development'.
Review of F. O. Schmitt's chapter in "Analysis of Development". "He has not a single word for all my efforts trying to relate the lipo-protein structure of the cell membrane (of which he speaks a lot) to the biological phenomena of cellular adhesion, locomotion, cell division, differentiation. Instead he glorifies the blah-blah of Weiss."
On Winterbert's claims about the development of the morula and other research papers. On a paper by Roy Gillette.
On the outline of one of their book chapters.
On the correction of the manuscript.
On Caspari's concept of differentiation.
On the outline of their book. On a proposed paper on the significance of the cell membrane in development. On a paper for the upcoming Growth Meeting in Oxford.
On Mascona. On Paul Weiss. On Trinkaus and his own research program: "I cannot see too much sense in the gospel of Trinkaus that it is most important to analyze embryonic determination in terms of cytological rather than histological events. My objection is that the embryo, my teacher, does think in terms of germ layers, even the whole organism and not primarily in terms of individual cells and their subunits." Programmatic letter, mainly on the historical intellectual roots of Holtfreter's research program.
Review of "Analysis of Development".
On applying for US immigration visa.
On his NSF grant application. On his recent paper on thymidine and cell adhesion. On radioactive labelling methods. On Hiroko Holtfreter's studies on the field properties of the organizer. In this letter Johannes Holtfreter claims that he has written Hiroko Holtfreter's thesis. On Caspari and Paul Weiss.
On culture media for studying differentiation of the organizer. On the natics of frogs, mice and monkeys.
On Hiroko Holtfreter's upcoming PNAS publication. On Lovtrop's recent research & publications on birth defects.
On getting material for his Embryology course. On Claude and Chargaff and induction. On upcoming collaborations.
On his difficulties at University of Rochester. On his recent trips to Germany and Paris. On his experiments with Pleurodales eggs at Gallion's lab at Sorbonne Paris.
Holtfreter's general evaluation of Holtfreter's & Hamburger's chapter in 'Analysis of Development'.
On Holtfreter's Bali pictures. On his plans visiting the US.