146 Scientific Intelligence. 
Among the formule for the relations of two places in the omit 
those for the chord of anelliptic or hyperpoli i of the 
extreme radii vectores, and of the time of describing the sector 
are especially worthy of attention. The methods derived there 
tr 
ti ti da 
the various formule for computing the special pert reer oft : 
from th 
chapter there are new formule and methods. The p ae 
such a work would be impossible by one who has not. re 
amili For its ort 
bs 
_ logical observations were made every three hours. 
Combining this with other acere a 
this important constant he obtains 8’°8484:°013, Com 
