Correspondence
Thank you for visit
Max Delbrueck writes to ask Hamburger about a visit to Vanderbilt
On controversies about Hammett.
On Weiss' appointment as visiting professor of zoology at Washington University.
Offer of help for Holtfreter
On Graham DuShane leaving to Stanford.
Update on personnel
Letter discussing Germany, the depression
Regarding grant application and pear-shaped cells
On Wenger'sappointment as Assistant in Zoology for 1945-46.