Correspondence
On his book of alpine flowers. On his plan to write an article on 'A common regulation for Embryonic Induction and Cell Type Conversion?'
On NGF findings.
Critical comments on "Analysis of Development".
Sending a paper on the ear and nose, dealing with remarks by Hamburger on the polarity of the ear.
On Hiroko Holtfreter's NSF grant. On Spemann.
On the interchanges between nerves and end organs.
Updates on travel
Review of "Analysis of Development".
On his alternative views of cell biology and developmental biology. On his intellectual legacy.
On the program for the President's Symposium at the E. Lansing Meetings.
On the manuscript of "Analysis of Development". On the program for the upcoming Growth symposium. On his recent visit at Cold Spring harbor.
On the program for the President's Symposium at the E. Lansing Meetings.