USES OF MALLEABLE ZINC. \\ 



which is the more northern of the guards; the right angle is 



at (3. 



The distances of some of the most remarkable fixed stars Distances of 



will y,ive the reader a better idea of the magnitude of degrees, |°ed stats *° 



and are, therefore, added. 



o f ft 



Arcturus to * Ursa? Majoris 30 29 



The two outermost stars in the belt of 



Orion 2 44 O 



The two stars in the shoulders of Orion 7 32 30 



Capella to Castor (a Geminorum) • • 30 



Aldebaran to Sirius • ••• 45 53 20 



to Capella ...30 43 30 



to the western shoulder of 



Orion 15 47 36 



Sirius to Rigel (£ Orionis) 23 40 



Procyon to Regulus (a Leonis) .... 37 20 



to Rigel 38 27 30 



Regulus to Spica Virginis 54 2 



Arcturus to Spica Virginis 32 2 



to Regulus^ 59 49 



Spica Virginis to Antares 45 52 



Antares to Arcturus 56 4 10 



to Aquila 60 9 30 



Lyra- to Spica Virginis 87 46 



to Aquila 34 9 



to the tail of the Swan 23 52 



The tail of the Lion (0) to Spica Vir- 

 ginis 35 2 10 



N. R. D. 



II. 



On the Advantages of Malleable Zinc, and the Purposes to 

 which it may be applied. By Mr. Charles Sylvester. 



To Mr. NICHOLSON. 



Sir, 



,/a.T the time I had some conversation with you on the sub- Of the uses of 

 jcct of malleable zinc, 1 was not aware of all the advantages zmc * 



possessed 



