DEDICATED TO

JOHN CHIPMAN GRAY

EMINENT ALIKE AS A MEMBER OF THE MASSACHUSETTS BAR

AND AS

ROYALL PROFESSOR OF LAW IN HARVARD UNIVERSITY

WITH WHOSE LEARNING AND DISCRIMINATION IN THE HANDLING
OF FUNDAMENTAL PROBLEMS IN THE LAW OF FUTURE
INTERESTS IT IS THE PURPOSE OF THIS VOLUME
MORE INTIMATELY TO ACQUAINT THE MEM-
BERS OF THE BAR OF ILLINOIS.