iv CONTENTS. 



Page 



Meteorological Observations by Mr. Howard near London, 

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

 Veall at Boston 80 



NUMBER VIII.— AUGUST. 



On the Royal Observatory at Palermo 81 



Mr. Ivory's Letter to Mr. Airy, Lucasian Professor of the Ma- 

 thematics in the University of Cambridge 88 



Letter from Mr. Ivory to the Editors of the Philosophical Ma. 



gazine and Annals of Philosophy 93 



Mr. De la Beche's Collections in JForeign Geology — [No. II]. 



(continued) 9.5 



Lieut.-Col. Miller's Plan for Mooring Ships in Roadsteads . . 110 

 Mr. Reid on Writing-ink, and on the Effects which are pro- 

 duced upon it by Paper and Parchment Ill 



M. De Humboldt on the Volcanos of Guatemala 117 



Mr. W. Phillips's Noticeof some remarkable Crystals of Quartz, 



imbedded in the Limestone of the Black Rock, near Cork. . 122 

 Mr. Henderson's Remarks on Capt. Sabine's Pendulum Obser- 

 vations 124? 



Mr. Edmonston on the Origin of the Power of Suspending Re- 

 spiration, possessed by Aquatic Mammalia and Birds 126 



Dr. Hodgkin and Mr. Lister's Notice of some Microscopic Ob- 

 servations of the Blood and Animal Tissues 130 



Mr. J. Phillips on the Direction of the Diluvial Currents in 



Yorkshire 1 38 



Proceedings of the Royal Society 142 



Linngean Society 146 



Geological Society 147 



• Astronomical Society 149 



Atomic vVeight of Nickel 151 



New Combustible Gas — Oxides of Gold 152 



Oxahevri*^e, a new Mineral 153 



On the Ir. n contained in the Blood 154 



Composition of Native Argentiferous Gold 155 



New Patents 1 .:6 



Meteorological Observations 1 58 



by Mr. Howard near London, 



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

 Veall at Boston 160 



NUMBER IX.— SEPTEMBER. 

 Mr. Ivory on the Figure of Equilibrium of a Homogeneous 

 Planet in a Fluid State ; in reply to the Observations of 



M. Poisson, published in this Journal for July last 161 



Mr. De la Beche's Collections in Foreign Geology — [No. III]. 



(^continued) 168 



Capt. Sabine's Reply to Mr. Henderson's Remarks on his 



Pendulum Observations 176 



Mr. 



