cclxxii 



PRELIMINARY SOLUTIONS. 



MARS II. 



Normal Equations. 



Solving the equations derived from the last column, it became evident that a nearer approach 

 to accuracy would he attainable hy the exclusion of the Kremsmiinster observations. This 

 being done, the solution gave the values and mean errors thus : 



0".1878 

 y = + 3".4538 0".0516 

 z = + F.513T 0".1069 

 W= + 0".1828 0".1463 



The propriety of the exclusion of the Kremsmiinster group is thus vindicated, and the weights 

 thus obtained for the other groups are available for the next solution. The following slightly 

 different weights, obtained from still another solution, were actually employed for the multi- 

 plication : 



Sant. Equal. 



1.539 



Sant. Mend. 



0.411 



Sant. Merid., (suppl.) 



0.308 



Wash. Equal. 



2.526 



Cape Merid. 



1.614 



Greenwich Merid. 



0.685 



