The numbers of Psyche issued during the past year were mailed on the 
following idates: 
Vol. 79, no. 4, December, 1972: April 25, 1973 
Vol. 80, no. 1-2, March-June, 1973: September 7, 1973 
Vol. 80, no. 3, September, 1973: December 16, 1973 
