CONTENTS 



THIRTY-FOURTH VOLUME. 



On Deal Pendulum Rods 3 



The Bakerian Lecture. An Account of some new analytical 

 Researches on the Nature of certain Bodies, particularly 

 the Alkalies, Phosphorus, Sulphur, Carbonaceous Matter, 

 and the Acids hitherto undecomposed ; with some general 

 Observaiio?is on Chemical Theory .. .. 6, 108, 181 



An Inquiry into the Terrestrial Phcenomena produced hy 

 the Action of the Ocean 19, 13? 



An Acco7mt of some Experiments, performed with a Vieiv 

 to ascertain the most advantageous Method of constructing 

 a Voltaic Apparatus, for the Purposes of Chemical Re- 

 search QQ 



On the Origin and Formation of Roots 31 



Analysis of the Mecanique Celeste ofM. La Px.ace. By 

 -M. BlOT 36,202,252 



Account of the Dissection of a Human Foetus, in which the 

 Circulation of the Blood was carried on without a Heart 



43 



Geological Observations on the Excavations of p'alleys, the 

 supposed Exislefice of numerous Lakes at former Periods 

 where Valleys now exist, which the Streams flowing 

 through them are said to have broken down, &c., in Re- 

 ply to Mr. John Carr's .. 49 



A numerical Table of elective Attractions j with Remarks 

 on the Sequences of double Decompositions . . . . 53 

 Vol. 34. ATo. 140. £)<;c. I8O9. a On 



