VI CONTENTS. 



Page 



Meteorological Observations made at the Garden of the Horti- 

 cultural Society, at Chiswick, near London, by Mr. Giddy 

 at Penzance, Dr.Burney atGosport, and Mr. Veall at Boston 240 



NUMBER XXII.— OCTOBER. 



Mr. Ivory on the Method employed in the Trigonometrical Sur- 

 vey for finding the Length of a Degree perpendicular to the 



Meridian 241 



Mr. Ivory's Remarks on an Article in the Bulletin des Sciences 



Mathematiques Physiques et Chimiques for March 1 828 .... 245 

 Prof. Encke on the Construction and Arrangement of the New 



Berlin Astronomical Ephemeris 248 



Mr. Meikle on an improved Syphon-Hydrometer 258 



Mr. Haworth's New Account of the Genus Eclieveria 261 



Mr. Graham's Account of the Formation of Alcoates, Definite 

 Compounds of Salts and Alcohol analogous to the Hy- 

 drates (continued) 265 



Mr. Addison's Remarks on the Influence of Terrestrial Radia- 

 tion in determining the Site of Malaria (continued) 272 



Mr. Children's Abstract of the Characters of Ochsenheimer's 

 Genera of the Lepidoptera of Europe ; with a List of the 

 Species of each Genus, and Reference to one or more of their 



respective Icones (continued) 278 



Mr. R. Phillips on the Crystalline Forms and Composition of 



the Sulphates of Nickel 287 



Mr. George's Chemical Examination of some of the Substances 



connected with an Egyptian Mummy 290 



Proceedings of the Geological Society 294 



Astronomical Society 298 



Royal Academy of Sciences of Paris .... 301 



Chlorine in Black Oxide of Manganese 306 



Brown Oxide of Chromium 307 



Masses of Native Platina —Preparation of Titanic Acid 308 



M. F. Wohler's Artificial Formation of Urea 309 



Native Iron in the United States 310 



Fossil Reptiles — Method of Preserving Funguses 312 



Difference of Longitude between Paris and Greenwich — Figure 



of the Cells of the Honeycomb 313 



M. Fayolle on Varignon's Method of solving Equations of the 



Second Degree — Mineralogical Literature 314 



Scientific Books 315 



New Patents — Meteor 316 



Aurora Borealis ? — Solar Spots 317 



Meteorological Observations 318 



made at the Garden of the Hor- 

 ticultural Society at Chiswick, near London, by Mr. Giddy 

 at Penzance, Dr. Burney atGosport, and Mr. Veall at Boston 320 



NUMBER 



