HIRUNDINIDAE—MARTINS. 109 Chipping Hill, Witham, on November 13th, 1878 (29. Nov. 30), and Colonel Marsden observed one over a pond at Great Oakley, on Nov. 26th, 1889 (29. Dec. 1). Mr. Buxton writes (47. 92) : " In the late summer these birds gather in thousands to roost in the reed-bed in the pond in Cook's Folly, [near Walthamstow]. This seems to be the general rendezvous for the district, and at sunset they may be seen flying in small , companies from every direction towards this point. The con- fused noise, as they swarm like bees to gain a foot-hold among the reeds, is most remark- able." Round Shoebury, Lieut. Legge says (34. 92) it breeds largely " under the bridges over the watercourses in the marshes." In 1865, he saw the last on No- vember 5th. In 1887, they were observed at Maldon after cold weather as late as Nov. 4th (29. Dec. 10). Mr. Hope informs me that he knew of a swallow living all one winter in Epping Church. Dr. Bree states (29. Nov. 20, 1875) that he had " a nest and eggs taken while the old bird was sitting on them in the middle of December [1866] at Wal- ton-on-the-Naze." The nest in question is still in Dr. Bree's Collection in Mr. Harwood's possession. Mr. Clarke, writing about 1845, says (24) that two perfectly white specimens had been taken at Saffron Walden. One of these, a young bird, is still in the Museum there. Henry Doubleday records (23. 4871) having seen a pure white specimen flying over his garden at Epping on the evening of August 19th, 1855. A young fawn-coloured specimen was shot near Little Baddow, on November 2nd, 1880 (29. Nov. 13). Martin : Chelidon urbica. An abundant summer visitor, arriving usually early in April and departing again about the middle of October, though individuals are sometimes observed much later. They would be very much com- moner than they are with us were it not for the Sparrows taking pos- session of their nests. I consider that the late Col. Russell was more than justified in all that he wrote upon this subject. His interesting paper, entitled " Martins and Sparrows," published in the Journal of Proceedings of the Essex Field Club (vol. iii., p. 20), should be read by every one. In this paper he clearly shows how the useful and ornamental Martins are being steadily exter- minated by the injurious and obnoxious Sparrows, which take possession of their nests. For many years Col. Russell carried on an incessant war against the Sparrows at Stubbers, shooting every one that appeared, until at last they became scarce birds. The