CONTENTS. V 



Page 

 The Bakei'ian Lecture. Sir Humphry Davy on tlie Relations 



of Electrical and Chemical Changes 190 



Dr. Spurgin's Outlines of a Philosophical Inquiry into the Na- 

 ture and Properties of the Blood ; being the Substance of 

 three Lectures on that Subject delivered at the Gresham 

 Institution during Michaelmas Term 1S26 (continued).... 199 

 Mr. Squire on Contemporaneous Meteorological Observations, 



as proposed by the Royal Society of Edinburgh 208 



Mr. Squire on the expected Occultation of Venus in February 212 



Dr. Abel's Account of an Orang Outang of remarkable Height 



found on the Island of Sumatra ; together with a Description 



of certain Remains of this Animal, presented to the Asiatic 



Society by Capt. Cornfoot, and at present contained in its 



Museum 213 



Lieut. Beaufoy's Astronomical Observations 1827 219 



Mr. Levy on a New Mineral Species 221 



New Books : — Partington on the Steam-Engine — Robberds's 

 Geological and Historical Observations on the Eastern Val- 

 leys of Norfolk 223 



Proceedings of the Royal Society 224. 



Linnaean Society 228 



Geological Society 229 



Horticultural Society 230 



Royal Institution of Great Britain 231 



Bromine 23 1 



Compound Nature of Bromine — Action of the Alkaline Chlo- 

 rides as disinfecting Substances 232 



Mr. Leslie's Instrument for ascertaining the Specific Gravity 



of Powders — Produce of Copper Mines in Cornwall 233 



Account of Steam-Engines in Cornwall 235 



New Patents 237 



Meteorological Observations 238 



by Mr. Howard jiear London, 



Mr. Giddy at Penzance, Dr. Burney at Gosport, and Mr. 

 Veall at Boston 240 



NUMBER IV.— APRIL. 



Mr. P. Taylor's Description of a Horizontal Pumping Engine 

 erected on the Mine of Moran in Mexico. (With an En- 

 graving) 241 



Mr. George's Analysis of a Sulphuretted Water from the 

 Northern Part of the Yorkshire Coal-field 245 



Mr. Ivory's Application of the Variations of Temperature in 

 Air that changes its Volume to account for the Velocity of 

 Sound 249 



Mr. Nixon's Theory of the Spirit-Level 256 



Mr. W. Phillips's Observations on the Crystalline Form, &c. of 

 the Gaylussite '. 263 



Mr. Abraham on New Phaenomena caused by the Effect of 

 Magnetic and Electric Influence, and Suggestions for ascer- 

 taining the Extent of the Terrestrial Magnetic Atmosphere 266 



