126 Sir J. W. Lubbock on some Methods of developing 



Le Verrier has assumed the arbitrary angle a=]40°56' 17"'6, 

 but as I do not know why he selected this angle, I have taken 

 « = 57° 17'44" # 5 sex., which is the angle of which arc = rad. The 

 arbitrary angle must be incommensurable with the circumference. 



Table L — Showing multiples of a less even circumferences to be 

 used in finding particular values of any function. 



Table II. — Showing the logarithms of the sines and cosines of 

 multiples of a to be used in finding particular values of any func- 

 tion. 



