TABLE OF CONTENTS 



NUMBER XLIIL— JULY. 



Mr. J. "Nixon on the Measurement (by Trigonometry) of the 

 Heights of the principal Hills of Swaledale, Yorkshire (con- 

 tinued) t 1 



Mr. W. Galbraith on the Obliquity of the Ecliptic 13 



Mr. H.Witham on the Vegetable Fossils found at Lennel Braes, 

 near Coldstream, upon the Banks of the River Tweed in 



Berwickshire 16 



Mr. B. Bevan on the Power of Horses 22 



Mr. R. E. Alison's Narrative of an Excursion to the Summit 

 of the Peak of Teneriffe on the 23rd and 24th of February 



1829 (continued) 23 



Mr. J. Ivory on a direct Method of finding the shortest Di- 

 stance between two Points on the Earth's Surface when their 



Geographical Position is given 30 



Mr. De la Beche's Notes on the Geographical Distribution 

 of Organic Remains contained in the Oolitic Series of the 

 Great London and Paris Basin, and in the same Series of the 



South of France (continued) 35 



Capt. E. Sabine's Notices occasioned by the Perusal of a late 



Publication by Mr. Babbage 44 



Mr. C. Rumker's Corrected Elements of the Comet lately ob- 

 served in Pegasus, founded upon Observations made by 

 Mr. Taylor at the Royal Observatory ; with Observations and 



Elements of the same Comet, by M. Valtz, of Nimes 50 



Rev. Dr. Fleming's Note on Mr. MacLeay's Abuse of the Di- 



chotomous Method in Natural History 52 



Mr. W. S. MacLeay on the Dying Struggle of the Dichotomous 

 System. In a Letter to N. A. Vigors, Esq. (continued) .... 53 



Proceedings of the Royal Society 58 



Linnaean Society 62 



Geological Society 64 



at the Friday-Evening Meetings of the Royal In- 

 stitution of Great Britain 68 



Prospectus of a Plan of a Society of General Practitioners in 



Medicine and Surgery 71 



Mr. C. Babbage's Notes on a Letter addressed by the Secre- 

 tary of the Royal Society to the President 72 



Observations by Dr. Roget, in reply to Mr. Babbage 73 



Dr. Turner's Chemical Examination of Wad „ 75 



Organic Texture of Vegetable Fossils— Academia Caesarea Na- 

 turae Curiosorum r t 75 



Mexican Mines — New Patents „ , 77 



a 2 Solar 



