50 



THE ANATOMY OF SCIENCE 



condition, is moved slowly downward, we trace 

 the heavy curve in the figure. If I had used a 

 more complicated but also more complete ap- 



FlGURE 6 



Asymptotic Rotation 



paratus, my compass would have drawn simul- 

 taneously the curves of Figure 5, which do not 

 look like circles, but look to the Euclidean eye 

 like h3rperbolas, with dotted lines as asymptotes 

 (lines which are approached indefinitely, but 

 never reached) . And yet we may define the rules 



