[PAGE 1]
January 21, 1958

Dr. Farris Isbell
Naticnal Institute of lentel Bealth
Addiction Research Center
U. S. Public Realth Service Hospital
P. 0. Bcx 2000
Lezington,Kentucky

Dear Dr. Isbell:

I am very happy to hear that you will be in Washingtou soon. I have set aside scze time in the afterncon of February 7, so if you will stop here at your convenience, ve can go into the details of soze of this vork. I have collected a comsiderable amount of material that ray be of interest to you.

As you indicated in your letter, I am most interasted in a preliminary atuty at leasTon the K-302, since progress in the extraction dopends upon comfirmation of the aninal teets. In the future I'll try to improve the form and content of the pharmacological report on ths varioua materials.

The structural formuls in question is as follovs:

I have scme other information about this substance but I would rather hold it until we can discuss it vhen you are here.

22