The numbers of Psyche issued during the past year were 
mailed on the following dates: 
Vol. 57, no. 4, Dec., 1950: April 23, 1951 
Vol. 58, no. 1, March, 1951: June 29, 1951 
Vol. 58, no. 2, June, 1951: November 19, 1951 
Vol. 58, no. 3, Sept., 1951 : April 7, 1952 
