WITH AN APPENDIX BY PEOFESSOR A. LODGE. 



101 



Table of Zonal Harmonics ; i.e., of the Coefficients of the Powers of x as far as P 2r , in 



the Expansion of (1 2zcos0-|-a; 3 )- i in the form l+P^+PjX* + . .. + P n x" + .. . 

 for 5 Intervals in the Values of 6 from to 90. The Table is calculated to 

 7 decimal places, and the last figure is approximate continued. 



