Starkey, Mr. T., the Gold Isis Medal to, for fine Broad Cloth, made of Wool from New South Wales, xxxix; his Communication respecting, 230.

Steam Boilers, Mr. Hall's Communication on a Self-acting Apparatus for supplying Steam Boilers with Water,

T.

Taylor, Mr. E., the Gold Isis Medal to, for an Architectural Design, xxxix.

Taylor, Mr. J. F., the Silver Isis Medal to, for a Pencil Drawing, xxxvii.

Theed, Mr. W., the Silver Isis Medal to, for a Model in Plaster, xxxviii.

Thom, Mr. R., the Large Silver Medal to, for an Hydraulic Apparatus, xi; his Communication respecting, 81.

Thompson, Mr. J., the Gold Vulcan Medal and Fifty Guineas to, for an Improvement in the Silk Ribbon Loom, xxxix; his Communication respecting, 195.

Turner, Miss J., the Silver Palette to, for a Copy in Pencil, xxxviii.

Turner, Mr. R., the Silver Isis Medal to, for a Portrait in Oil, xxxvi.

Turnips, Messrs. Cowley and Staines, method of preserving during the Winter, 29.

Turret Clocks, Mr. W. Wynn's Communication on an Improved Hammer for, 105.

Tuscany, Mr. H. W. Reveley's Communication respecting the nature and preparation of the Stones used in, for Grinding Fine Flour, 47.

V.

Van Diemen's Land, Communication on opening a Market for the Wool raised in the Settlement of, 237.

W.

Watson, Mr. J., the Silver Vulcan Medal to, for a System of Musical Notation, xi; his Communication respecting, 78.

Watts, Mr. F. W., the Silver Isis Medal to, for a Landscape in Oil, xxxvi.

Watts, Mr. F. W., the Gold Isis Medal to, for a Landscape in Oil, xxxvii.

Mr. H. W., the Silver Isis Medal to, for a Composition in Oil, xxxvii.

Wells, Mrs., (See Woodhouse.)

White, Mr. T. D., the Silver Palette to, for a Copy in Chalk, Xxxviii.

Wigzell, Mr. E., the Large Silver Medal to, for marking a Ship's place on a Chart, xi; his Communication respecting,

158.

Williams, Mr. E., the Silver Palette to, for an Outline, xxxviii. Windows of Churches, &c., Mr. W. Bailey's Communication on an Improved Method of Opening and Shutting, 173.

Wood, Mr. J., the Gold Isis Medal to, for a Model in Plaster, xxxix.

Woodhouse, Miss Sophia (now Mrs. Wells,) the Large Silver Medal and Twenty Guineas to, for a new Material for Fine Plat in Imitation of Leghorn; Communication respecting, 217.

Wrought-Iron Gun Carriage, Mr. R. Pering's Communication respecting, 54.

Wynn, Mr. W., Twenty Guineas to, for an Improved Hammer for Turret Clocks, xi; his Communication respecting, 105.

Z.

Zeigler, Mr. H. B., the Gold Medal to, for a Landscape in Oil, xxxvii.

ERRATA ET CORRIGENDA, in Volume XXXIX.

Page 50, line 11, for "from the extremity of d," read " from the extremity e of the arc c d e,"

5, from bottom, for "24 pounder above men-
tioned," read " 24 pounder mentioned in my
Essay."

3, for "crached," read " cracked."
5, from bottom, omit t.

*

4, from bottom, for read +.

20, for " time," read " line."

6 from bottom, for " 23rd" read " 22nd."
2 from bottom, for " 22" read " 20.”

2, for "in the line of small figures, parallel
to the former" read "in the small figures
contained between the same horizontal lines
as the former."

16, for "parison" read" comparison,"
6, dele," or syphon."

2, from bottom, after "state" add "fig. 3 is a
front, and fig. 5, a back view."

- 14, for "end" read "ends."
16, for "oil" read "steel."
4, for "or" read" of."

In the description of Mr. Perkins's Orthometer and Pleometer, pages 127 and 128, the two instruments are in some measure confounded with each other: the distinction between them is as follows. The Orthometer has an adjusting screw o, by which the position of the level can be adjusted, so that the indexes shall be always in a line when the vessel is in proper trim.

The Pleometer has a permanent position, and the inclination of the vessel is inferred from the deviation of the indexes from the center or horizontal line.

The Orthometer is more sensible to slight changes in the inclination; the Pleometer is constructed to exhibit a greater range of variation.

ABRAHAM, Mr. J. C., on a Mag- | Ainger, Mr. A., on a Self-adjusting

Improved Dibble for Acorns, by C. Anchors, Improved Construction of,