Page 178, line penult., for fly read fry.-184, line 10, for Great Coot-Footed Tringa read Grey Coot-Footed Tringu; same page, line 13, after Red Coot-Footed Tringa, read Johnson's Small Cloven-footed Gull.-186, line 9 from the bottom, for redgy read sedgy.-198, line 4 from the bottom, for Cranaries read Craneries. -206, line 16, after they can fly, place a comma.—207, line 9, for Enicdemus read Edicnemus.-209, line 5, for countries read counties.-210, line 6 from the bottom, for that read than.— 224, line 9 from the bottom, for Prarie read Prairie.—227, line 7 from the bottom, for Americanus read Americana.—247, line 13, for countries read counties.

Page 253. After BRAMBLING read Bramble ; same page, after SISKIN read Barley-Bird.—262, add (to precede the note) ORDER, PASSERES, (Linn.) LINNET.-264, line 11 from the bottom, for (43) read (45).—274, line 6, for lilies read lilacs: sweet smelling lilies do not blossom in April, in this country.

Page 280. The HOUSE-SPARROW is occasionally seen white; another variety black.

Page 285, line 6, for its read it's.-503, line 10, for embossom'd read embosom'd.—305, line 15, for Indicus read Indica.-317, line 2, after hour add a semicolon.

Page 319. The Manuel d'Ornithologie of M. TEMMINCK first appeared in 1815. The arrangement consists of fifteen orders and eighty-eight genera. In line 6 of this page from the bottom for ornithologsts read ornithologists.

Page 328, line 6, for contists read consists.-357, line 3, for PI read PicÆ.—358, line 7 from the bottom, for the feet read three feet.-Same page, line 11, for resembles read resemble.

Page 377. The account of the colours of the mule and female OSTRICH has been obtained from the most authentic sources; yet the female ostrich, now in the museum of the Zoological Society, and which was lately dissected there, has the wing and tail feathers while. Are these birds subject to variation in this respect?

Page 381, line 1, after came dele the comma.-line 15, for

ON THE SONG OF FEMALE BIRDS.

xxix.

helmets read helmet.-390, line 11, for PLANTAN read PLANTAIN. -399, line 8 from the bottom dele the article a.

In addition to what is stated by Mr. SWEET in page 73, concerning the singing of birds, that gentleman has favoured me with the following particulars: "When you called on me last year, at Chelsea, I had several female birds which never attempted to sing: but now I have two that sing frequently; one is a female Black-cap; she sings a note peculiar to herself, and not the least like the male or any other bird with which I am acquainted; I kept her several years before she began to sing. I have also a female Willow-wren that sings nearly as much as the cock; this bird was bred up from the nest, and did not sing at all the first year; her note is quite different from the male's, but resembles it sufficiently to indicate that it belongs to the same species. The females of the Larger Pettychaps, and the Larger Whitethroat, which I have had for several years, never attempt to sing. The following are the migratory birds which I now have. Wheatear, Whinchat, Stonechat, Redstart, Nightingale, Larger, and Lesser Whitethroat, Black-cap, Greater Pettychaps, and Willow-wren; I had also, till lately, the Wood-wren.— R.SWEET, Chelsea, Oct. 26, 1827."

The Willow-wren, Mr. SWEET informs me, sings also at night when there is a light in the room.

Page 49. That birds are rendered more buoyant by having the cells in their bodies filled with air, as well as also the bones, there is no reason whatever to doubt; but in what manner their increased buoyancy is produced does not seem well ascertained. Whether by condensation of atmospheric air similar to that produced in a strongly inflated bladder, by which its elasticity is considerably increased, or whether by some other air specifically lighter than that of the atmosphere?—The first appears the most probable reason.

b

TO MRS. RICHARD KAY,

THE FOLLOWING

INTRODUCTION

Is respectfully inscribed by her sincere and

affectionate Friend,

THE AUTHOR.

Since this Introduction has been printed, Mr. HENRY WARREN has published six Lithographic Views on the RAVENSBOURNE, among which is one of LADY WELL, the retreat described in the following pages. The coincidence is somewhat remarkable, seeing that Mr. WARREN and the author of this work are total strangers to each other. As delineating some favourite spots, the author feels peculiar gratification in recommending Mr. WARREN's Views to public attention. They consist of, the Source of the Ravensbourne-Cæsar's Camp-Simpson's Castle, Bromley-Scene in Lord Furnborough's Park— Ladywell— and the Mouth of the Ravensbourne. These Views may be seen at Messrs. Dickinson and Co. Bond-Street.