OBSERVATIONS OF LUMINOUS METEOES. 



339 



duced for each of the resulting eleven periods a series of showers or 

 radiant-points, of which the following were the various numbers : — 



Number of 

 Group 



I 



II 



III 



IV 



V 



VI 



VII 



VIII 



IX 



X 



XI 



Duration of Group 



January 1-15 



February 1-March 12 



March 31-April 12 , 



May 3-15 



May 26-June 13 



June 26-July 11 



July 15-August 2 , 



August 6-12 (a.m.) 



August 24-September 14 . 

 October 29-November 13 . 

 November 25-December 31 



Number of 



Showers 



30 

 24 

 37 

 22 

 31 

 36 

 27 

 25 

 36 

 24 

 23 



Totals, January-December 



315 



Number of 

 Shower- 

 meteors 



313 

 381 

 542 

 269 

 356 

 459 

 264 

 413 

 455 

 255 

 436 



4,143 



The showers are frequently recurrent in two, or even more successive 

 periods ; and of the whole number nearly 200 are probably distinct 

 meteor-systems, with well determined radiant-points, most of the dates 

 and positions of their centres agreeing well with those of formerly -known 

 showers, occurring in earlier catalogues ; but many of them also are 

 new, and a few are apparently rich systems, agreeing in some cases with 

 cometary dates and radiant-points. 



Of these two shower-catalogues, showing where they corroborate 

 each other and confirm older well-established positions of general radiant- 

 points of shooting-stars, Mr. Greg has prepared a Table (Table V. p. 358) 

 continuing and completing the analysis (Tables I. — IV., in the last volume 

 of these Reports, pp. 180-187) for the first half of the year, which he 

 made last year of Mr. Denning's observations, and Italian meteor-shower 

 reductions. The limits of that analysis are now extended, by this 

 additional table, so as to afford a complete comparative list of the newly 

 found radiant-positions traced by Mr. Denning, for all the different 

 months of the year. 



As a result of his arrangement at O'Gyalla for collecting observations 

 of shooting-stars in Hungary (some MS. lists of which at its commence- 

 ment, seethe note in these Reports, vol. for 1877, p. 165, the Committee 

 received formerly), Herr N". von Konkoly presented to the Com- 

 mittee, at the end of last year, two volumes of meteor observations, 

 containing observed paths and notes of the appearances of 1191 and 

 1367 meteors respectively, recorded during the years 1871-73, and 

 1874-76. To assist and promote accurate registration of meteor-tracks, 

 and the collection of such accounts among astronomers of his own and 

 other countries, Herr von Konkoly has had drawn and lithographed 

 (by Carl Schrader, of his observatory at O'Gyalla) two planispheres, or 

 central projections of the sphere on two planes touching it, one at the 

 pole, and the other at the equator of the heavens. No stars are entered 

 on the plates, which contain the meridians and parallel circles only, for 

 each degree, but a catalogue of them from the north pole to the 30tk 

 degree of south declination, and full directions for their insertion on the 



