The present volume is the second work published under the imprint of the Yale University Press in memory of Arthur P. McKinstry, who died in New York City, July 21, 1921. Born in Winnebago City, Minnesota, on December 22, 1881, he was graduated from Yale College in 1905, and in 1907 received the degree of LL.B. magna cum laude from the Yale Law School, graduating at the head of his class.