DESCRIPTION OF MR HENRY GUY'S METHOD OF GIVING A TRUE SPHERICAL FIGURE TO BALLS OF METAL, GLASS, AGATE OR OTHER HARD SUBSTANCES

B DONKIN, H GUY
1838 Transactions of the Institution of Civil Engineers  
doi:10.1680/itrcs.1838.24383 fatcat:ydpyuvf64fgfbpwvt4qkzjujpu