Paramatta. — Dorpat Ohscrvat" — Greenm'ch Mural Circle. 311 



LONGITUDE AND LATITUDE OF PARAMATTA. 



Tlie longitude of the observatory of Paramatta, in New 

 South Wales, is 10" 4.' lV-5 east of Greenwich, as determined 

 by various methods of observation. The latitude of the ob- 

 servatory is 33° 4-8' 42". — Edin. Phil. Jour?!, vol. ix. p. 391. 



OBSERVATORY OF DORPAT IN LIVONIA. 



This observatory, under the direction of M. Struve, an able 

 and active astronomer, has been supplied, in the most hand- 

 some manner, with fine instruments, by the Emperor of 

 Russia, whose liberality to science deserves the highest en- 

 comiums. M. Frauenhofer of Munich has been occupied for 

 two years in completing, for this observatory, an achromatic 

 telescoi^e, Jour tee7i feet in focal lejigth, and iioith an aperture of 

 nine inches. " You may judge from this," says M. Struve 

 in a letter to Baron de Zach, " how much our liberal Govern- 

 ment does for astronomy. Our observatory is particularly 

 indebted to the curator of our university, M. General Comte 

 de Lieven, who has not only provided it with every thing that 

 is excellent and perfect in the way of instruments, but has 

 also built a commodious house for the astronomer. He has 

 likewise ordered a great meridian circle, similar to that of 

 Gottingen, Munich and Konigsberg; a great repeating cir- 

 cle ; and an universal instrument, &c., all from the manufac- 

 tory of MM. Reichenbach and Ertel of Munich. — Edin. Phil. 

 Journ. vol. ix.p. 392, from ZacKs Corres.Astron. vol. \ui. p. S70. 



MEASUREMENT OF A DEGREE IN LIVONIA. 



The liberality of the Russian Government has also been 

 shown, in charg'ing M. Struve of Dorpai, with the measure- 

 ment of a degree of the meridian in Livonia. Px'operly 

 speaking, this work is carried on by the University out of the 

 large funds which the Government has put at its disposal 

 for every purpose that is useful and interesting to science. 

 M. Struve began his operations in the summer of 1822. — 

 Edi?i. Phil. Journ. vol. ix. p. 392. 



THE GREENWICH MURAL CIRCLE. 



p'eelino- a lively interest in any thing connected with the 

 Royal Observatory, we have, with the greatest satisfaction, 

 scfii the results of Mr. Pond's inquiry into the state of the 

 Greenwich nuiral circle: the experiments prove almost to a 

 mathematical certainty, that this splendid instrument is, after 

 twelve years' constant use, as free from error, as even its 

 warmest advocates, or the most accomplished observer, could 

 wish. — Journal of Science, vol. xvi. p. 189. 



