ii CONTENTS. 
Art. X. Mean of Twelve Months’ Meteorological Observations 
in the years 1822-3, made at Paramatta, New South 
Wales. By His Excellency Sir Thomas Brisbane, 
K. C. B. F. R. S. M. W. S. &c. - - 119 
XI. Memoir on several Masses of Iron found in the Eas- 
tern Cordillera of the Andes. By Mariano de Ri- 
vero of Santa Fe de Bogota, and M. Boussingault. 
Communicated by the Authors to Mr Heuland 
(with a Plate), ~ - 102 
XI L Abstract of a Report on the State of the Elm-Trees 
in St James’s and Hyde Parks. Drawn up at the 
request of Lord Sidney, the Ranger, for the Trea- 
sury, by W. S. Macleay, Esq. F. L. S. &c. 123 
XIII. Analysis of Cinnamon-stone from Ceylon. By Dr C. 
G. Gmelin of Tubingen. Communicated by the 
Author, - - - 129 
XIV. Notice regarding the Island of Grimsey, off the North 
Coast of Iceland, and the Isles of St Kilda, on the 
North-West Coast of Scotland, - - 132 
XV. Report on the Present State of the Wooden Bridge at 
Montrose, and the practicability of Erecting a Sus- 
pended Bridge of Iron in its stead. By George 
Buchanan, Esq. Civil Engineer, and Lecturer on 
Mechanics at the School of Arts, Edinburgh (illus- 
trated by Three Engravings), - - 140 
XVI. Remarks on a paper by Mr ITaidinger on the Crys- 
talline form of the Sulphato-tri-Carbonate of Lead. 
By IT. J. Brooke, Esq. F.R.S. - 157 
XVII. On the Influence of the Hyg-rometric State of the At- 
mosphere upon the Minimum Temperature of the 
Night. By Adam Anderson, M. A. F. R. S. E., 
Rector of the Academy of Perth, - 1 0 1 
XVIIL Notice of an Inquiry into the Principles according to 
which Friendly Societies (or Benefit Societies) ought 
to be conducted, in order to insure their stability 
and success, - - - 1 69 
XIX. On the Comparative Value of Oil and Coal Gas. By 
Andrew Fyfe, M. D. F. R. S. E. Lecturer on Che- 
mistry, Edinburgh, - • - 1 7 1 
XX. Remarks on the subjects connected with Dr Brew- 
ster’s “ Reply to Mr Brooke’s Observations on the 
Optical System of Mineralogjn” By H. J. Brooke, 
Esq. F. R. S. 
187 
