We introduced motility into six nonmotile cultures on the first effort with PLT22 + S. dublin. The H antigens were b-1,2
in each instance, as they should have been. Two additional nonmotile cultures were done later with negative results. These
were repeated today with a stronger phage (SW435 + S. dublin, i.e. just growing the cultures together on a shaker for 48 hours)
[HANDWRITTEN: Positive motility H not yet examined]. In the tubes which did not become motile there were pronounced "tracks."
Bill had a long letter from Orskov today and he is most enthusiastic about the prospects of working with you. Also he seemed
quite sanguine about the chances of everything working out.
We will be glad to send the sucrose fermenters and the r, i forms. The latter are not my personal bugs, but came from Taylor
and Kauffman and as yet are not published.
Many thanks for your remarks about linked transductions and phase variability. I can appreciate your remarks about lack of
a yardstick for phase variation. From Stocker's experience, it entails a lot of work to measure this property.