28 APRIL 1923, Page 24

Mr. Haynes, an American breeder, says, probably with truth, that

his little instruction book is the first attempt to apply modern principles to the problem of dog breeding." The first half of the work is concerned with the principles, the second half with the practice. Biologists who are con- cerned with the great questions of heredity, variation and the like will find a good deal of interesting matter in these pages. Incidentally, we note that the familiar maxim that " a great sire is famous for his daughters " is hardly borne out by the author's tables for Airedales that have won championships.