74 



BULLETIN or THE 



TABLE VII. — Direction of sound as determined by 

 ears used simultaneously. 



both 



TABLE VIII. — Direction of sound as determined by both 

 ears used simultaneously. 



Mr. D. P. Todd's paper was entitled 



SOLAR PARALLAX FROM THE VELOCITY OP LIGHT. 



(This papo' will be found published in full in the American Journal of 

 Science for January, 1880.) 



* This observer was uncertain whetlier the sound came from a point of 

 the horizon 450 to the left of the zero point or from one 1350 to the left. 

 After having the sound repeated & number of times he decided upon the- 

 former direction. 



