2 FEBRUARY 1929, Page 16

BROWN V. GREY SQUIRRELS.

A curious point is brought out on the relations of the grey foreigner and our native brown squirrel. It seems that the grey squirrel began to multiply, owing to the date of its introduction, in the years when, according to the law of its periodicity, the brown squirrel was at its nadir. This made it more difficult for the brown squirrel to assert itself, but also it wrongly produced the impression that the grey squirrel is necessarily expulsive of the brown. One hopes that the theory is true ; but it can scarcely be doubted that the two do not, in Henry James's phrase, " consent to a mutual relation."