The Uranometria Argentina. 377 
nomenclature. It opens with a history of what was done by 
Bayer, who first broke away from the traditional catalogue and 
figures of Ptolemy, by Lacaille, Bode, Sir John Herschel, Baily 
and others in their attempts to arrange the stars of the southern 
sky in constellations, and give the stars distinctive names in 
them. The principles which Dr. Gould has finally acted upon 
are expressed in six rules. 
The first of these is that the constellations of Ptolemy and - 
Hevelius, together with those adopted or introduced by Lacaille, 
are to be retained, and no others. Argo disappears nominally, 
being replaced by Carina, Puppis and Vela. 
e other rules refer principally to the names of the stars 
and the constellations, except the third, which is perhaps the 
most important. 
‘The boundaries must be so arranged that the constellations 
shall include all stars denoted by Greek letters which were 
This fixing of the boundaries of the constellations, in the 
southern sky, is a subject of great importance. ould it not 
The fifth chapter contains the catalogue of the stars arranged 
by constellations, Only those stars are included that are 
