BIRD AND BUTTERFLY MYSTERIES, by Bernard Acworth (Eyre and Spottlswoode, 30s.).
CAFL ACWORTH, whose on ginal and stimulating political and military views are not unknown to senior readers of THE; CATHOLIC HERALD, has long applied his mind to the study of
nature. His explanation of the mystery of the cuckoo has brought him considerable fame.
In this beautifully produced book he gathers together his views on many problems of migration in birds and insects. especially the butterfly. The cuckoo mystery is also propounded at some length.
Capt. Acworth is incapable of writing dully, and one does not need to be a naturalist to enjoy this kind of selective work in the mysteries of nature.