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CONTENTS. 
Art. XI. Notice respecting Copernicus, with a Plate, contain- 
ing a Fac Simile of one of his Letters, - 63 
XII. Account of the Singular Treatment of a Queen Bee. 
By Mr George Cron, - - 65 
XIII. Account of recent Astronomical Observations made 
on thp Continent. By M. C. Rumker, Rector of 
the Nautical Academy, Hamburgh, - 71 
XIV. Account of a Chinese Mangle. By Andrew Waddell* 
Esq. F. R, S. E. - - 73 
XV. Account of a Map constructed by a Native of Taunu, 
of the country south from Ava. By Francis Ha- 
milton, M. D. F. R. S. L. & E., and F, A. S. L. & E. 75 
XVI. Observations on the Natural History and Structure 
of the Proteus Anguinus. By Prof. Configliachi 
and Dr Rusconi. (Concluded from Vol. IV. p. 406.), 84 
XVII. Account of the New Galvano-Magnetic Condenser, 
invented by M. Poggendorf of Berlin, - ll c 2 
XVIII. History of Mechanical Inventions and Processes in 
the Useful Arts, - - 113 
1. Method of Propelling Steam-Boats, without Wheels. By 
J. B. Fkaser, Esq, Edinburgh, - - 116 
2. On the Substitution of Block-Tin Pipes in place of Cop- 
per ones, and on the Construction of their Joints, By 
Mr James Milne, Brass-Founder, Edinburgh, - 120 
3. Description of a New Shower-Bath. By Mr John Mur- 
ray, Lecturer on Chemistry, &c. - 122 
4. Method of Fastening the Seams of Hose for Fire-En- 
gines, and for connecting two or more Lengths of Hose 
together. By Jacob Perkins, Esq. - 123 
5. On forming a Communication with the Shore in Ship- 
wrecks, and on Instantaneous escapes in cases of Fire, 124 
6. Account of an Improved Glaze for Porcelain. By Mr 
John Rose, - 127 
7. Chinese Method of making Sheet-Lead, and its Applica- 
tion to the making of Zinc-Plates for Galvanic Experi- 
ments, - - - ib. 
S. Account of a New Stain for Wood, and a Yellow Dye for 
Cloth. By John Hill, Esq. - - 128 
9. Description of the Improved Patent Gas Meter. By Mr 
John Malam, - - 129 
10. On the Application of Animal Empyreumatic Oil to the 
manufacture of Prussian Blue. By M. Haenle, 131 
11. On the Discoloration and Porosity of Coral Ornaments, 
and the Method of Preventing it. By J. J. Virey, ib. 
