Abdu'l-Baha's views on the spiritual effects of suffering and trials, and their necessity for personal growth of the soul.
The exact date of this first edition is uncertain; MacEoin's bibliography
says "Reissued n.d. [between 1940 and 1954], Wilmette, Ill., Baha'i Publishing Committee, 15 pp. ed., 16. New York: Baha'i Publishing Committee, n.d. [193-]. Collins 2394-5."
This booklet was re-issued in 1944, in a 25-page edition (larger font, but with the same content), under the name The Spiritual Meaning of Adversity. See a comparison of both covers, side-by-side: seto_tests_both_covers.jpg.