a 
sry 
CONTENTS 
OF THE 
THIRTY-SEVENTH VOLUME. 
ON the musical Sounds of the Gases,—on the meleoro- 
logic Solution of Water in Air,—Electricity, &c.,—on 
Water-Pressure Engines for Mines,—on the Confusion 
arising from various Meanings to the same Words and 
Marks used in Science . .. ar 3 
Of the Koumiss of the Calmucks, wis Fa tha ar raeit Spirit 
which they distil from Milk, .. se oe oe 6 
Proposed Mineral Surveys of the British Counties.—Mr. 
Ktrwan’s Opinions on this Subject .. .. «. 8 
Memoir on the Diminution of the Obliquity of the Ecliptic, 
as resulting from ancient Observations reo Man ee 
Observations upon Luminous Animals .. .. 24, 93 
On Dr. A. Walker’s Opinion, respecting the general De- 
luge, the Formation of Mountains, the Ruptures of the 
Strata, &c. by the Approach of a Comet to the Earth. 35 
Reflections on some Mineralogical Systems .. 39, 11¥ 
On Cystic Oxide, a new Species of Urinary Calculus 51 
On the Heat produced by Friction or Compression. ., 56 
On the Parts of Trees primarily impaired by Age . 59 
Extract of a Letter from the Rev. Joan Burnxuey, D.D. 
F.R.S. Andrew’s Professor of Astronomy in the Uni- 
versity of Dublin, to the Rev. Nevit MaskEtyne, D.D. 
F.R.S,. Astronomer Royal, on the annual Parallax of « 
Rye! OP oe ee Oe 
On the Alteration sake Air aia Water evita on Meat 63 
Vol. 37. No, 458, June 1811. a On 
