First may I thank you for the reprints on your work on phototaxis that you sent me some time ago.
I am writing now to inquire whether, in preparation for your thesis, you have accumulated any sort of bibliography on chemo-
as well as as phototactic responses of bacteria. We have run into a rather striking example of negative taxis on the part
of Salmonella with respect to phenol, and I would be interested to know whether there is the basis of a definitive interpretation
already in the literature. We have had equally little luck in trying to find earlier literature on the energy metabolism
of bacterial motility, and I would be grateful to you if you could refer me to anything that you may have run into on this