PROGRESS OF ASTIiONOMV 1 OK \M\ AND 18i)2. (>!)T 



Tlir toUowiiij^' (listril)iil ion of rlic /ones anions tlic (liilciciil ol)scr\a- 

 tories was (k'liiiiti\oly a(l()i)te(l ill place of that i)i('vi<)usly ]nil)li>;ii('(l : 



ObsiTvatorits. 



Greenwicli 



Koine 



Catauiu 



Hiilsiiiglors 



Potsdam 



Oxlbrd 



I'aris 



lionleaux 



Toulon.se 



Aljiiers 



Sail Ft-niaiuli) 



i Taciibava 



Santiasio 



La I'lata 



Uio do Jancivo 



Ca))e of (lood Hope. . . . 



Syilney 



Melliourne 



(l(i) Every year before the <mi(1 of January a re})oit upon the jiroji'ross 

 of the work will 1»e made to the bureau of the I'eriiiaueiit Coniiuittee. 



(17) The thanks of the conference were voted for the eourte.sy of 

 the Academy of Sciences in printing the bulletin, aiul the hope was 

 expressed that the different goverunients would i)rovide the necessary 

 means for the observations tliemselves and for the ])ublicati(Ui of the 

 chart. 



The sixth lasciculus of the bulletin contains i)apers by rrof. Kap 

 teyn and 31. Sautier (Ui the parallactic micrometer, ami ui)on photo- 

 <ira])hic ma.uiiitudes by Profs. Wolf and Duner. The latter subject has 

 also been discussed by Dr. Scheiuer in the Asfrono)nis<-ltc X<(clirichtcn^ 

 by Prof. l*ritcliard in tlie CoinpU's Rcndnn. and by INFr. Christie in the 

 Monihly Xoticcs. 



Phototjraphs of llic I'lriadcs. — liutlierford's photograi)hs of the Plei- 

 ades taken in 1872 and 1S74 ha\'e been selected lor measurement by 

 .Mr. Jacoby as ofi'eiiug- an opportunity for comi)arin,u- the accuracy of rhe 

 pliotograplis with that of lieliometei' and micrometer measures, l^ach 

 l)late contains two impressions of the cluster, both of which were meas- 

 ured. Mr, Jacoby's method consisted of measuring the position angle 

 and distance from the star 24 7>, and he linds the ])robable error of the 

 mean of the twenty exposures to be about 4 ()."()3 in each element. 



A comparison between these photograjdiic ])laces and the ])laces 

 resulting from the Vale and Kiiiiigsberg lieliometers shows that tiic 

 lihotograjihs are fully entitled to be taken into con.sideration in making 

 a study of the ])roper motions or in forming a <letiniti\'e catalogiu' of 

 the group. 



Dr. Max Wolf, of Heidelberg, with a jioi trait lens of 2A inches 

 ai)ertiire, has not only discovered new nebuhe on his long exposure pho- 

 tograi^hs, l)ut new minor planets; several meteors which crossed the Held 

 left perfectly distinct records. 



