396 



Mr. E. A. N. Pochin 



our consideration. This curve is, of course, a particular case 

 of the equiangular, or logarithmic, spiral, and is commonly 

 known as r=e 9 . 



Fig-. 1. 



The spiral is again shown in fig. 2, starting from the point 1, 

 and passing through the points marked 2, 3, 4, &c, at which 



