CONTENTS. 



Comparative Anatomy; or a slight Attempt to dtaio up a Com- 

 pariso7i betiveen Animal and Vegetable Life. .. 81 



Proposal for a new Regulation rf Weights and Measures, 1 13^ 



Some Observations o?i Steam-Evfines; with a Table of IFork 

 done by certain Engines in Cornwall, from August 1811 to 

 May 1815, both Months inclusive: showing the monthly 

 Consumption of Coals by the Engines reported; the Number 

 rf Pounds of Hater lifted one Foot high by the Coals con- 

 sumed; arid the average Work performed by each Bushel of 

 Coals, expressed in Pounds of Water lifted one Foot high. 1 16 



Specification of Mr. Arthur Woolf's latest Patent for certain 

 Improvements in the Construction and Working of Steam- 

 Eyigines. . . . . . . . . . . . , 1 20 



On the Size best adapted for Achromatic Glasses; icilh Hints 

 to Opticians and ylniatenrf; of astronomical Studies on the 

 Construction and Use of Telescopes in general. .. 122 



AnInvestigalio7i of the Press^ire sustained by the fixed Supports 

 of flexible Substances. , . . . . . , . 139 



Some Account of the Electrical Experiments of M. DeNelis, 

 ofMaUnes in the Netherlands. . . . . 161, 2h9 



On the Diffusion of Heat at the Surface of the Earth. 167 



Some Geological Observations. .. .. .. 182 



On the Strength of Beams. .. ,. .. .. 191 



Observations upon the different Hypotheses that have been pro- 

 posed respecting the Nature of Light. .. .. 195 



On correcting the Rate of an Eltctric Clock by a Compensation 

 for Changes of Temperature. . . . . . . 203 



On the Fracture ofElectricalJars by spontaneous Discharges. 2.(lo. 



New Outlines of Chemical Philosophy. . . 20S, 327, 430 



An alphabetical Arrangeynent of the Places from whence Fossil 



Shells have been obtained by j.1//-.Jamjes Sovverby, and drawn 



and described in Vol. 1. of his " Mineral Conchology;" with 



the geographical and stratigraphical Situations of those 



Places, and a List of their several Fossil Shells, &c. 2 1 1 



On Jameson's Preface to Cuvier's Theory of the Earth. 225 



On the Principles of Arches. .. .. .. .. 241 



On the Origin of Meteoric Stones. .. .. .. 245 



071 Metallic Salts 246 



Comparative Gravity of the Human Body and Sea-Water. 24 S 



Observations upon Wheel-Carriage Experiments, submitted to 



the Consideration of the Dublin Society 249 



