Vill CONTENTS. 
On the Irish Coins of Edward IV. By Aquilla Smith, M.D. page 367 
Remarks on the aa care Power of Glass for Metals. ei wl 
369 
J. Knox, Esq. 
Notice of a Gaseous Coripsind of Fluorine’ sa Cyanogen By 
George J. Knox, Esq. . . 371 
On the Dynamical Theory of Crystalline Reflexion a Refraction. 
By James Mac Cullagh, LL.D. . Los  owsag4 
Notice respecting Meteor-paper. By the Bay, ae Lloyd, A.M. 379 
On Porcelain Seals found in Ireland. By J. Huband Smith, Esq. . 380 
On ancient Irish Seals. By George Petrie, Esq. 382 
On the Optical Laws of Quartz. By James Mac Cullagh, LL. D. 385 
An Inquiry into the Period of the first Use of the Zero. By 
James O. Halliwell, Esq. . . . ela). SBenat7 
On the Querns used by the Trish. By J. ‘Hataud ‘Smith, Esq. - 390 
On the Magnetizing Power of the more refrangible Solar wee By 
George J. Knox, Esq. and the Rev. Thomas Knox. . . - . 393 
Report of Council for the past Year. . . > pen tO 
On a new Air Thermometer. By Wrigly Gr sae Esq. 405 
On an essential Oil obtained during the Rectification of Whiskey. 
By James Apjohn, M.D. . . 5 ier ee 174 
Account for the Year ending 31st of Marek 1840. 413 
Remarks on the Indications of the Barometer. By the Archishop 
of Dublin. Gras 414 
On the Boetian Niauarieal Notation. ‘By Sse 0. Halliwell, Esq. 415 
On the Animal Remains and Antiquities found at Dunshaughilin. 
By William R. Wylde, Esq. . ai 420 
Remarks on  Aristotle’s ae of weiinate: By —— 
Osborne, M.D. . : 427 
Notice of an African Gold oe By the ase iste a Todd, B. D. 430 
On the Value of the Numerical Coefficient in the Formula for 
the Force of Aqueous Vapour in the Atmosphere.* By James 
Apjohn, M.D., and the Rev. Humphrey Lloyd, A.M. 433 
On a Mansisetipt called the Book of Lismore. By the Rev. sane 
H. Todd, B.D. . 449, 458° 
Notes on the ieee, of the oth ree 1840, By Volt Ball, Esq., 451 
Notice of Meteor Paper found in Gloucestershire. i the Rev. 
Thomas R. Robinson, D.D. . . . 454 
On the comparative Amount of Rain at neh ara, danas of Tip- 
perary, and at Monks’ Eleigh, Suffolk. a the Rev. Thomas 
Knox, and Rev. Henry B. Knox. : 455 
Aecount of Observations of Magnetic Declination, Atte wy Be 
fessors Bache and Lloyd, with the View of determining Differences 
of Longitude. By the Rey. Humphrey Lloyd, A. M. 459 
* The third of the tables of the elastic force of vapour, referred to in this 
communication, pp. 443, 444, has been erroneously attributed to Mr. Lubbock. 
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