236 



The weight of the water displaced by the ball differs from the loss of j 

 weight by 1.4 %. The accuracy may be increased by using aluminum in- ! 



stead of steel. \ 



Specific Gravity of an Irregular Solid. 

 No Load. Aluminum in Air. Aluminum in Water. 



54.07 cm. 88.36 cm. 76.70 cm. { 



54.07 88.38 75.69 j 



54.08 88.38 75.69 - ! 

 Elongation in air 34.31 cm. ; 

 Elongation in water 21.62 cm. i 

 Decrease in water 12.69 cm. 



Specific gravity of aluminum 2.70. 



Specific Gravity of Solids Lighter than Water. I 



I 



Paraffin and Aluminum •; 



No Load. Paraffin in Air. in Water. : 



54.01 67.23 73.39 j 



54.01 67.25 73.37 ■ 



54.00 67.24 73.38 ' 



Elongation due to paraffin in air 13.23 cm. ; 



Elongation due to both in water 19.37 cm ^ 



Elongation due to aluminum in water 21.61 cm. .^ 



Elongation due to paraffin in water — 2.25 cm. ;] 



Loss by paraffin in water 15.48 cm. 1 



Specific gravity of paraffin = .854. ii 



Specific Gravity of Liquids. 



No Load in Ether. Aluminum in Ether. i 



54.26 cm. 79.01 cm. - 



54.26 79.00 



54.27 79.00 : 

 Elongation due to aluminum in air 34.31 cm. 1 

 Elongation due to aluminum in ether 24.74 cm. i 

 Decrease in ether 9.57 cm. " 

 Decrease in water 12.69 cm. 



Specific gravity of ether .754. J 



Besides these, two other experiments can be performed in a very satis- i 



factory manner, namely, "The Surface Tension of Water" and "The ; 



Distribution of Magnetism in a Bar Magnet." j 



