THE
HE Authors of Original Papers and Communications in the

present Volume are Mrs. Agnes Ibbetson; J. D. Maycock, Esq.; Mr. G. J. Singer; Mr. E. Lydiatt; Mr. John Davy; W. Crane, Esq. F. R. M. S. Ed.; Mr. R. Lyall, M. R. P.S. E. &c.; R. L. Edgeworth, Esq. F. R. S. M. R. I. A.; L. 0. C.; T. A. Knight, Esq. F. R. S. &c.; Mr.J. Dalton; the Rev. J. Blanchard ; J. Clarke, M. 'D.; Mr. J. T. Price; Mr. St. Amand; T. Forster, Esq.; Mr. J. Murray; Marshall Hall, Esq.; W. Moore, Esq.; Mathematicus; Mr. B. Cook; W. N.; Zeno.

Of Foreign Works, Messrs. Gay-Lussac and Thenard; M. Regnier ; M. Van Meerten ; M. Stratingh; M. Cagniard Latour; M. de la Chabeaussiere;Mr.G.B. Sage; M. Bucholz;M.Daubuisson; M. Cordier; Dr. B. H. Tarry; M. C. Duméril; M. L. Cordier; M. Hassenfratz.

And of British Memoirs abridged or extracted, T. Thomson, M. D. F. R. S. E, &c.; the Rev. J. Bremner; T. A. Knight, Esq. F. R. S. &c.; H. Davy, Esq. LL. D. Sec. R. S. Prof. Chem. R. I. F. R. S. E.; Mr. E. Smith; Mr. J. Hutton, junr.; H. P. Lee, Esq.; the Rev. J. Hall; Mr. T. Balls; Mr. J. Baker; Mr. W. Jeffery ; Mr. J. Davis; Mr. W. Moult; Mr. B. Smith; Mr. J. Taylor; B. C. Brodie, Esq. F. R. S.

The Engravings consist of 1. Dissections of Plants, illustrating the Growth of the Bud, by Mrs. A. Ibbetson. 2. Crystals of AlJanite, by Dr. T. Thompson. 3. Instruments for measuring the Velocity of Rivers, by Mr. Regnier. 4. Method of covering a Roof with Flagstones, by R. L. Edgeworth, Esq. F. R. S.M.R.I. A. 5. A Ship's ordinary Boats converted into Lifeboats, by the Rev. J. Bremner. 6. A Barometer with an adjusting Scale, and 7. An Airpump for producing a perfect Vacuum, by a Correspondent. 8. Section of a Grapehouse, by T. A. Knight, Esq. F. R. L, and H. SS. 9. Figures to illustrate the Formation of the Leaves of Firs, and their Fructification, and the Motion of the Flower of the Barberry; delineated by Mrs. Agnes Ibbetson. 10. A Diagram illustrating the Radiation of Cold, by Marshall Hall, Esq. 11. Diagrams illustrative of the Motion of Rockets, by W. Moore, Esq. 12. A new Thrashing Machine, invented by H. P. Lee, Esq. 13. A Screw adjusting Plough, by Mr. Thomas Balls. 14. An improved Implement for extirpating Docks and Thistles, by Mr. J. Baker. 15. A pair of expanding Harrows, by Mr. Wm. Jeffery. 16. Mr. J. Davis's Fire-escape. 17. Mr. W. Moult's Filtering Apparatus. 18. Mr. B. Smith's Method of Relieving a Horse, that has fallen in the Shafts of a loaded Cart. 19. Mr. J. Taylor's Extractor of foul Air from Mines, &c.

TABLE

1

Engravings of the following Subjects: 1. Dissections of Plants, illustrating the

Growth of the Bud, by Mrs. A. Ibbetson. 2. Crystals of Allanite, by Dr.

T. Thompson. 3. Instruments for measuring the Velocity of Rivers, by Mr.

Regnier.

1. On the Interior of Plants. Letter II. By Mrs. Agnes Ibbetson

II. Observations on the Hypothesis, which refers chemical Affinity to the elec-

trical Energies of the Particles of Matter. By J. D. Maycock, Esq. Com-

municated by the Author

12

III. Observations on the igniting, or Wire-melting Power of the Voltaic Bat-

tery, as proportioned to the Number of Plates employed; with an Account

of some Experiments on this Subject, made in Conjunction with Mr. John

Cu·'bertson; by Mr. John Singer, Lecturer on Chemistry and Natural Phi-

losophy. Cominunicated by Mr. Singer

29

IV. On the different Forces with which Tubes, Bars, and Cylinders adhere to

a Magnet. In a Letter from Mr. E. Lydiatt

34

V. An Answer to Mr. Murray's Observations on the Nature of Potassium and

Sodium: by Mr. John Davy

35

VI. On the Nature of Oximuriatic Gas, in reply to Mr. Murray. By Mr.

John Davy

39

VII. An Attempt to answer the queries proposed by F. D. in the Journal for

April last: by William Crane, Esq. F. R. M. S. Édinburgh

44

VIII. Experiments on Allanite, a new Mineral from Greenland; by Thomas

Thomson, M. D. F. R. S. E. Fellow of the Imperial Chirurgo-Medical

Academy of Petersburgh

47

IX. Observations on Three Papers of Mr. Davy. By Messrs. Gay-Lussac and

Thenard

59

X. Observations respecting the Sensible Perspiration of the Dictamnus Albus,

or Fraxinella: by Mr. Robert Lyall, Surgeon, M. R. P. S. E., &c. com-

municated by the Author

67

XI. Description and Use of a Rheumameter, to estimate and compare the Ve

locity of the Current of Rivers: by Mr. Regnier, Conservator of the central

Museum of Arullery

68

Scientific News

72

Meteorological Journal

80

JUNE,
JUNE, 1811.

105,

Engravings of the following Subjects: 1. Method of covering a Roof

Flagstones, by R. L. Edgeworth, Esq. F. R. S. M. R. 1. A. _ 2. A

ordinary Boats converted unto Lifeboats, by the Rev. J. Bremner. j. A

Barometer with an adjusting Scale, and 4. An Airpump for producing a

perfect Vacuum, by a Correspondent. ,5. Sections of a Grapehouse, by

T. A. Knight, Esq. F. R. L. and H. SS.

1. Description of a Method of Roofing Buildings securely with Flagstones. By

Richard Lovell Edgeworth, Esq. F. R. S. M. R. I. A.

,81

II. Method of making any Ship’s Boats a Lifeboat, to preserve the Lives of the

Crew in imminent danger; by the Rev. James Bremner, Minister of Walls

and Flota, Orkney Islands

86

DI. On the Scale of the Barometer, and the Construction of an Airpuinp for

procuring a perfect Vacuum. In a Letter from a Correspondent

IV. A Description of a Forcing House for Grapes; with Observations on the

best Method of constructing them for other Fruits. By T. A. Knight, Esq.

F. R. S. &c.

109

V. On some of the Combinations of Oximuriatic Gas and Oxigen, and on the

Chemical Relations of these Principles to Inflanımable Bodies. By

phrey Davy, Esq. J.L. D. Sec. R. S. Prof. Chem. R. I. F. R. S. E. 112

VI. Farther Account of a Mule Animal between the Male Ass and Female Ze.

bra. In a Letter from Thomas Andrew Knight, Esq. F. R. S. &c. 127

VII. Remarks on Potassium, Sodium, &c.; in Reply to the Communications

of Justus. By John Dalton

129

VIII. Table of the Rain that fell in various Places in the Year 1810, by the

Rev. J. Blanchard, of Nottingham; with a Meteorological Table for the

same Year, by Dr. Clarke, of that Town

134

IX. On the Use of Iron Pipes for conveying Water, and Mode of securing

their Joints. In a Letter from Mr. Joseph T. Price

136

X. On the Invention of the Economical Process for Evaporation ascribed to

Montgolfier. In a Letter from Mr. St. Amand

138

XI. On the Combustion of Ether, and of Metals, in Oximuriatic Gas: by Mr.

Van Meerten, anu Mr. Stratingh

XII. Observations in Illustration of Mr. Howard's Theory of Rain. In a.

Letter from Thomas Forster, Esq.

142

XIII. Observations on Dr. Bostock's Review of the Atomic Principles of Che-

mistry. By John Dalton

143

Scientific News

151

Meteorological Journal

100

a

140

JULY,