PUBLIC HEALTH LABORATORY SERVICE
(Directed by the Medical Research Council for the Ministry of Health)

Central Enteric Reference Laboratory,
CENTRAL PUBLIC HEALTH LABORATORY

COLINDALE AVENUE
Lonpon, N.W.9

Telephone ; COLINDALE 7041 (8 lines)
Telegrams : DEFENDER, HypE, LONDON

 

énd March, 1955.

Dear Joshua,

I am sending you herewith a reprint of a recent letter to
Nature. Also enclosed is a copy of the Vi-phage typing scheme. I

think you will find it easier to appreciate the significance of the letter
if you read it in association with the chart.

As you know, I have now regularized Alec's attachment to this
department when he returns to England. I heard from him that Helen is
probably coming to Bruce Stocker to do a Ph.D. So there will be a high
concentration of your old friends in London.

Kind regards to Esther and yourself,
; ‘

Dr. J. Lederberg,
Department of Genetics,
University of Wisconsin,
Madison, 6,

Wisconsin,

U.sSeAo