sation—as it may be called—which would shortly disappear, and 
only reappear when the same meteors shall again have just passed 
eir nodes ; but which, for aught that appears to the contrary, 
may by successive conjunctions occurring in different parts, dur- 
B say years, come to occupy a permanent position forward 
_ Of the nodes, ‘and to possess a uniform constitution. (C 
latter are rimary and immediate, and exhibits the principles 
cin oo’ and if ov and pi are the lines of common section of 
hm with planes parallel to the ecliptic, then from similarity of 
© triangles E tm, oi’o and pip it appears that if 07’, 07’ repre- 
Sent the real motion of the earth and of the meteors respectively 
Acos RPP 00 : d if the initial ve- 
mee ip 2nd A cos. B= ee a 
ty is called unity, the resulting velocities will be 1+ Pe 
Asin. B very nearly—the positive sign applying to pp and me 
