OBSERVATIONS. 

 And finally, from the Astronomischc NachricfUen, ^"-833 



F. OBSERVATIONS OF MARS II. WITH THE KREMSMONSTER MERIDIAN- 

 CIRCLE. 



MARS II. 



Observations with the Kremsmiinster Meridian-Ciide. 



These complete our data, so far as Mars is concerned. 



III. FIRST SERIES OF OBSERVATIONS OF VENUS. 



The ohservations of Venus are, as has already been stated, far less numerous than those of 

 Mars; and not only do the rich series garnered by Lieutenant Gilliss, at Santiago, find no 

 corresponding comparisons on the same nights with the same star, but there are scarcely a suffi- 

 cient total number of observations in the northern hemisphere for the deduction of trustworthy 

 results, even by the circuitous and time-consuming methods which it has been found necessary 

 to employ. Two hundred and one Santiago observations are to be compared with the seventy- 

 four which can be obtained from northern observers. Of these, 83 are the results of micro- 

 metric comparisons at Santiago, and 118 are meridian determinations made there. The 

 northern hemisphere furnishes, during the same two conjunctions, 22 micrometric observa- 

 tions at Washington, 34 meridian ones at Greenwich, two at Altona, and 16 at Cracow. 

 From these we are to endeavor to extract the best determination of the parallax which they 

 will afford. 



