Mr. Bevan o« the Formation of the present Crust of the Earth. 313 



island of Fernando Po, and to appretiate its value, whether 

 as a station to suppress the slave-trade, or a point and fortress 

 from which to commence and to pi'otect all future operations 

 in Africa, whether these be commercial or political. It is be- 

 sides a very healthy and feitile spot, and on this account alone 

 ought to claim a decided preference over all our present ill- 

 chosen and sickly stations on the coast of Africa ; but when 

 we take into account the commanding geographical position 

 (commanding alike for every purpose) Fernando Po sinks every 

 other place on the coast of Africa into insignificance. — Glas- 

 gow Courier. 



LENGTH OF THE SECONDS PENDULUM IN VARIOUS PARTS OF 



THE EARTH, AS DETERMINED BY CAPTAIN SABINE. 



Latitude. Length in a vacuum, 



Stations. reduced to the 



o / ;/ level of the sea. 



St. Thomas 24. 41 N. 39-02074 



Maranham 2 31 43 S. 39-01214 



Ascension 7 55 48 S. 39 02410 



Sierra Leone. ..... 8 29 28 N. 39*01997 



Trinidad 10 38 56 N. 39-01884 



Bahia 12 59 21 S. 39-02425 



Jamaica 17 56 7 N. 39-03510 



New York 40 42 43 N. 39-10168 



London 51 31 8 N. 39-13929 



Drontheim 63 25 54 N. 39-17456 



Hammerfest 70 40 5 N. 39-J9519 



Greenland 74 32 19 N. 39-20335 



Spitzbergen 79 49 58 N. 39-21469 



Quarterly/ Jmirnal. 



SUGGESTIONS RESPECTING THE FORMATION OF THE PRESENT 

 CRUST OF THE EARTH. 



To Richard Taylor, Esq. 

 Sir, 



The pages of your Magazine have been heretofore appro- 

 priated to subjects of a geological nature ; I presume, therefore, 

 you will not object to the admission of a few lines on that in- 

 teresting subject, for the purpose of communicating to the 

 pubhc an idea which I have long entertained, and have oc- 

 casionally mentioned in conversation, and which may jiossibly 

 serve to explain much of the difficulty which at present remains 

 of accounting for the abundance of marine fossils so much 

 above the level of the present ocean. 



I have not leisure, at this time, to enter into particulars, but 

 shall in a few words state the principles of my hypothesis, 



Vol. 66. No. .",30. Oct. 1825. R r leavin<r 



