ASTRONOMY. 11 



rections for the division errors of the instruments, he has 

 been able to bring about excellent agreement between the 

 Paris and Cape observations with both sextant and sector. 

 The results appear to be comparable in precision with Brad- 

 ley's observations. The epoch chosen is 1750.0. 



Dr. Schrader, of the O'Gyalla Observatory, Hungary, has 

 published a list and maps of all stars visible in northern lat- 

 itudes from the first to the fifth magnitude. There are five 

 charts in all one polar chart and four others, equatorial 

 charts so divided that in each season of the year (as spring, 

 etc.), only one of these, or at the most two, will be needed. 

 This is a convenience in observations of meteors, and in other 

 ways. The maps have a peculiarity which is new, we be- 

 lieve. The sizes of the circles which represent stars of the 

 various magnitudes are proportioned to the absolute amount 

 of light received by the eye from the stars themselves. 1S40 

 stars are mapped. An appendix gives the method of com- 

 puting the orbit of a meteor swarm from observations with 

 tables. 



A catalogue of the mean places of 750 stars for 1870.0, 

 from observations made at Kremsmiinster by P. G. Strasser 

 in 1864-74, has recently appeared. In Vol. XII. of the Mem- 

 oirs of the R. A. S. (1838), a catalogue of 208 stars observed 

 at Kremsmiinster appeared ; and a series of 560 stars, observed 

 about 1840, has been reduced by Reslhuber, but not yet pub- 

 lished. * 



The maps to the uranometry of the southern heavens, made 

 by Gould and his assistants at Cordoba, have been prepared 

 at Bien & Co.'s, in New York. They are lithographed, and 

 each map will be about half the size of the maps to the 

 Durchrnusterung. 



Dr. Loewy,of Paris, has presented to the French Academy 

 of Sciences a catalogue of 521 moon-culminating stars. The 

 places of these depend upon observations made at the ob- 

 servatory of the Bureau of Longitudes with portable instru- 

 ments. The Bureau has just completed the determination 

 of the telegraphic longitudes of Neuchatel, Geneva, and Ly- 

 ons. It will shortlv undertake the determination of the Ion- 

 gitude of Lisbon, in aid of the American determination of the 

 longitude of Rio Janeiro just completed by Lieut.-Comman- 

 der Green, U.S.N. 



