THE PROPERTIES OF MATTER. 11 



the cubic decimeter has been selected as the standard, 

 and when thus used is called a liter (pronounced leeter). 



f Milliliter (ml) = 1 cu. cm.= 0.061022 cu. in. 

 DIVISIONS. \ Centiliter (d.) = 10 " = 0.338 fid. oz. 

 [ Deciliter (dl.) = 100 " = 0.845 gill. 



UNIT. Liter (1.) =1000 " = 1.0567 liquid qts. 



f Dekaliter (Dl) = 10 cu. dm.= 9.08 dry qts. 

 MULTIPLES. -I Hektoliter (HI) = 100cu.dm.= 2 bu. 3.35 pks. 

 [ Kiloliter (El.) = 1 cu. ra. = 264.17 gals. 



30. Comparative Helps. It may be noticed that 

 the m. corresponds somewhat closely to the yard, which ifc 

 ivill replace. Kilometers will be used instead of miles. 

 The cu. cm. may be represented by the ordinary die used 

 in playing backgammon. The /. does not differ very much 

 from the quart, or the DL from the peck, which they will 

 respectively replace. In fact, the I. is, in capacity, inter- 

 mediate between the dry and liquid quarts. 



31. What is Impenetrability? Impenetra- 

 bility is that property of matter by virtue of which 

 two bodies cannot occupy the same space at the 

 same time. 



(a,.) Illustrations of this property are very simple and abundant. 

 Thrust a finger into a tumbler of water ; it is evident that the water 

 and the finger are not in the same place at the same time. Drive a 

 nail into a piece of wood ; the particles of wood are either crowded 

 more closely together to give room for tlie nail, or some of them are 

 driven out before it. Clearly, the iron and the wood are not in the 

 same place at tlie same time. 



32. Experiment. Through one cork of a two- 

 necked bottle pass a small funnel or " thistle-tube," and 

 let it extend nearly to the bottom of the bottle. Through 





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