CONTENTS. 



Page 



X V\ Analysis of the solid contents of two hot mineral Springs in India. 

 By Edward Turner, M. D. F. R. S. E. and Professor of Chemistry 

 in the University of London. Communicated by the Author, 95 



XV. Account of the Lizard of Siam, with Observations. By Captain Bur- 

 ney, Envoy to Siam in I82G. Communicated by George Swin- 

 ton, Esq. F. R. S. and F. A. S. Edinburgh, 100 



XVI. Remarks on a Luminous Arch seen at Kendal, 27th December 1827. 



By Mr Samuel Marshall. Communicated by the Author, 102 



\ VII. Account of the Discoveries in Vegetable Physiology, particularly those 

 respecting the motion of the Sap, made by M. Dutrochet, Corre- 

 sponding Member of the Academy of Sciences, 103 

 XVIII. Account of the Earthquakes in the Antilles during the last six months 



of 1827. By M. Moreau de Jonnes, 112 



IX. Account of a New Self-registering Thermometer. By James King, 



Esq. Communicated by the Author, 113 



X. Observations on the Climate and Geology of New South Wales. By 

 James King, Esq. In a Letter to the Editor, 117 



XXI. Notice of the Diamond and Gold Mines of the Residency of the 

 North- West Coast of Borneo, 123 



XXII. On the Construction of large Achromatic Telescopes. By A. Rogers, 



Esq. 126 



XXIII. Occasional Meteorological Remarks and Observations, during the years 



1826—27- By a Correspondent, 129 



XX/ V. On Single Vision and the Union of the Optic Nerves. By W. Twin- 

 ing, Esq. 143 



XX r . ZOOLOGICAL COLLECTIONS, 153 



1. Account of one of the Brood of Boa Constrictors. In a letter from 

 David Scott, Esq. to George Swinton, Esq. ib. 



2. Notice of a shower of Insects which fell in a Snow Storm at Pokroff 



in Russia, 154 



3. Account of a Battle of Ants. By M. Hanhart, ib. 



4. Account of the Dog Trains of the North- West. By Dr Lyman 

 Foot, 155 



5. Rare Insects. — Furia Infernalis and Meggar, 156 



6. Account of a shower of Herrings which fell in Ross-shire in Scotland, ib. 



7. On the Cicada;, or Locusts of the State of Ohio. By Dr Hildreth, 157 



XXVI. HISTORY OF MECHANICAL INVENTIONS, AND OF 

 PROCESSES AND MATERIALS USED IN THE FINE AND 

 USEFUL ARTS, 159 



1. Observations on the Performance of the Engine at Huel Towan re- 

 cently erected by Mr Samuel Grose, ib. 



2. On the quantity of heat disengaged by the combustion of a bushel of 

 coal, 161 



3. On the Steam Case, 162 



4. On the quantity of heat which passes to the chimney, in Engines 

 working with high pressure steam, 163 



