262 Astronomy. [Lecture 17. 



main in this hemisphere a very great space, and 

 a great number of unformed stars, of which the 

 Abbe de la Ca-lle, a very learned and a very la- 

 borious astronomer, has formed fourteen new 

 constellations, which he has dedicated to the arts, 

 in giving them the figures and the names of the 

 principal instrument. The following is the list 

 of these, in the order of their right ascension : 

 The carver's workshop. The air-pump. 

 The chemical stove. The octant. 



The clock. The compass. 



The rhomboid reticule. The square and ruler. 

 The graver. The telescope. 



The painter's easel. The microscope. 



The mariner's compass. The mountain near 



Table Bay. 



1 have already noticed that there is a remark- 

 able track round the heavens, called the milky 

 way, from its peculiar whiteness, which is found, 

 by means of the telescope, to be owing to a vast 

 number of very small stars that are situated in 

 that part of the heavens. There are also several 

 little whitish spots which appear magnified, and 

 more luminous when seen through telescopes, 

 yet without any stars being distinguishable in 

 them. One of these is in Andromeda's girdle, 

 and was first observed in the year 1612 by Simon 

 Marius ; it has some whitish rays near its middle, 

 is liable to several changes, and, according to some 

 astronomers, occasionally disappears. Another 

 is near the eliptic, between the head and bow of 

 Sagittarius ; it is small but very luminous. A 



