Page images
PDF
EPUB
[ocr errors]
[blocks in formation]

Engravings of the following Subjects: 1. Figs. 2 and 3, of Mr. Troughton's
Apparatus for dividing Astronomical Instruments: 2. Diagrams_illustrating
the Art of Aerial Navigation; by Sir Geo. Cayley, Bart. 3. Leaf of the
Mimosa Pudica; by Mr. Robert Lyall.

[ocr errors]

Engravings of the following Subjects: 1. Sir George Cayley on Aerial Na
gation: 2. Apparatus for procuring Potassium: 3. Dr. Wollaston's reflect
Goniometer: 4. The Intervertebral Joint of the Shark.

APRIL, 1810.

Engravings of the following Subjects: 1. Mr. Miller's Drag for finding and rai
sing the Body of a Person drowned: 2. His Reel Safeguard, for the Security
of a Person going to the Assistance of one Drowning: 3. His Missile Rope to
be flung to a Person in Danger of being drowned: 4. Apparatus of Messrs.
Allen and Pepys, for the Respiration of Gases by Animals.

1. A mineralogical Outline of the District containing the Aluminous Schistus,

in the County of York, with the entire Process practised in the Manufactory

of Alum; to which is added an Analysis of the Sulphate of Alumine, and the

Supersulphate of Alumine and Potash, with practical Observations and Re-

marks: communicated by Mr. Richard Winter.

[ocr errors]
« PreviousContinue »