128 Statement of a Vlmifor [Aug. 



possible^ and be inserted therein. And it must be observed 

 that the stars of the chart must be such as can be seen under 

 favourable circumstances with one of Fraunhofer's comet- 

 seekers of 34 hues aperture, and a magnifying power of 10 

 times. 



6°. When stars stand too closely together to be separated in 

 the drawing, their magnitude only need be delineated, and the 

 number of them indicated by an equal number of lines under- 

 neath it, as in the pattern sheet, 19'' 29™ and 4- 11° 65'. 

 Where two stars are found double stars, i. e. such as are not 

 above 15'' or 20" distant from each other, they should be dis- 

 tinguished by such distance being mentioned : ex. gr. at 19'' 52'" 

 and + 10° 12'."^ 



7°. The sheet thus far advanced must be frequently compared 

 with the heavens, partly for the purpose of discovering the 

 changes that may have occurred during the drawing, and partly 

 also for the purpose of finally fixing the magnitudes which the 

 observer may be disposed to give to the stars. It will perhaps 

 not be possible to notice in the drawing the minute distmctions 

 between the magnitudes of the smaller stars marked on the 

 pattern sheet, such as the 9th and (9.10th) magnitude, nor will 

 it be essentially necessary. 



One may be convinced by the pattern sheet (which represents 

 one of the most starry parts of the heavens), that it is pos- 

 sible to attend to all these rules if and that the great multitude 

 of stars, marked upon it in the manner they are represented, 

 neither crowd the space, nor render a general review difficult. 

 To name and describe in such charts either the constellations 

 and their limits, or single stars, would be both useless and in- 

 jurious. 



The Academy have appointed a committee, consisting of 

 Messrs. Ideler, Oltmanns, Dirksen, Encke, and Professor 

 Bessel of Konigsberg. And whoever is disposed to undertake 

 the execution of a sheet, should apply to any one of the members 

 of that committee, who will point out to him a portion not yet 

 undertaken by others. Such a district will remain open for 

 him during two years : and if, after that period, he cannot shov/ 

 to the committee that he has made some c#hsiderable progress 

 in it, it will be transferred to another. 



As soon as any sheet is completed it must be sent to the com- 

 mittee ; who, after having examined and approved of it, will 

 cause it to be engraved and pubhshed, without waiting for any 

 others. The name of the author will be engraved on it, and 



• [For specimens of this mode of distinguishing the different stars, see the pattern 

 sheet., alluded to in the note in page 126. — Sec] 



+ [The greatest number of stars in any one of the squares in the pattern sheet is 

 1 6, and thej are all perfectly distinct, even with the distinguishing marks attached to 

 them. — Sec.\ 



