Friedrich Georg Wilhelm Struve. 157 
, and 
deduced a parallax of about 1” for that remarkable star. Struve 
at Dorpat, from micrometrical measurement made with Fraun- 
hofer’s instrument in the years 1835-8, obtained a parallax for « 
Struve vindicated the general truth of his father’s deductions. 
Such, then, is the share which must be assigned to cur associate 
I the determination of this most interesting, but difficult cosmi- 
cal iestion. 
or must we s 
VObservatoire Central de Poulkova given to the world i 
It would be but an obvious and inadequate remark simply to 
its arrangements: and a monument to the enlightened 
8enerosity of the Russian government, who defrayed the cost of 
US publication. A perusal of it can scarcely fail to kindle the 
admiration of every one who is endued with a taste for practical 
astronomy. What is of far more importance, almost every page 
Indicates the perfect mastery of the author over the instruments 
which he thus admirably describes, and attests the scrupulous 
tare with which he attended to the minutest circumstances which 
Could in any way contribute to the accuracy of their construe- 
portant work has on several occasions served as a guide for 
Suilding and organizing other observatories on the continent of : 
