15 JULY 1911, Page 16

[TO TUN EDITOR OF Mt "SPECTATOP.."1 SIR,—Among the many nests

built annually by house- martins under the eaves of our house I frequently notice double ones—like the one mentioned by your correspondent last week—and this year I see there is a treble one in which three flourishing broods are being brought up.—I am, Sir, &c.,