316 ACCOUNT OF THE ERECTION OF A GRANITE OBELISK, &C. 



the line of ascent. When it has ascended the desired height, 

 it is twisted horizontally round, by similar means, into its de- 

 stined position. 



If I have any where been unsuccessful in making my de- 

 scription intelligible, I shall be happy to give any farther ex- 

 planations in my power. I am, &c. 



M. WiLKS. 



To Dr Kennedy,! 

 Edinburgh. J 



XXIII. 



