118 Rev. W. D. Conybeare o?j M. de Beaumont's Theory 



heavy timber can be procured nearly at tlie price of Memel, 

 there will be no advantage derived from using it, so far as 

 strength is a matter of consideration. But for its hardness, 

 it may be preferable for blocks and for cabinet work. 



Mr. Barlow supposes I have been misled by the small error 

 in his formula, at the head of the sixth column. Being well 

 aware of the principle upon which that column was formed, 

 I made use of the corj-ect formula ; and although it may appear 

 strange, it is quite true that I did not discover the error until 

 pointed out by Mr. Barlow in his last paper. 



The above remarks are not intended to depreciate the value 

 of Tonquin Bean and the other species of wood in the market, 

 but simply to prove that a species of wood (Memel Deal) which 

 is now supplied in large quantities, will answer all the pur- 

 poses of the builder. I sincerely hope that whenever oppor- 

 tunity occurs, either to Mr. Barlow or others, they will con- 

 tinue to favour the public with similar valuable information 

 through the medium of your Magazine. 



I remain, Gentlemen, yours very truly, 

 ; Leighton, July 11, 1832. B. Bevan. 



XXVI. Inquiry how far the Theory ofM. Elie de Beaumont 

 concerning the Parallelism of Lilies of Elevation of the same 

 Geological JEra, is agreeable to the Phcenomena as exhibited 

 in Great Britain. Bij the Rev. W. D. Conybeare, M.A. 

 F.R.S. V.P.G.S. Inst'it. Reg. Soc. Paris.* 

 T^HE following remarks were drawn up by the author, in 

 -■■ consequence of an inquiry proposed to him by the British 

 Association for the Promotion of Science, at its first meeting 

 at York, in 1831, " how far the theory of M. Elie de Beaumont, 

 concerning the parallelism of the lines of elevation produced 

 by geological convulsions of the same a^ra, appeared to be con- 

 firmed by the phsenomena of our own island." This question 

 was referred to Professor Sedgwick and Mr. Conybeare; but 

 circumstances having prevented their communication, the lat- 

 ter alone is responsible for the views contained in the present 

 memoir; although, in the hope that some opportunity of inter- 

 course would have occurred, he may occasionally have used 

 the plural number. He has now only to add his earnest hope 

 that nothing in the following communication will be so mis- 

 construed, as to seem to imply any other feelings than those 

 of the highest respect for the very distinguished talents of M. 

 de Beaumont; for with them, on the contrary, from the period 



* Communicated by the Author. 



