40 Domestic Science 



The measuring cylinder, Z>, may be of different 

 capacities, varying in general from 10 to 1000 c.c. 

 It is graduated in cubic centimetres, the actual value 

 of each graduation depending on the size of the vessel. 



Similar measuring vessels may be obtained, ^ gra- 

 duated in accordance with the requirements of the 

 British units of capacity, but of these we will only 

 consider one, the pint measure, graduated to show 

 submultiples of a pint. Here again we find that the 

 British arrangement is complex, since the pint is 

 graduated in ounces. One pint of pure water at 62 F. 

 weighs 20 ounces and the measure is marked to show 

 these and fractions, such as J and J, of one ounce. 



23. Experiments involving the use of the vessels 

 mentioned will be described in later chapters and for 

 the present we will be content to show how the large 

 measuring cylinders may be of service in some cases 

 in determining the volumes of irregular solids. 



EXPERIMENT 11. Partly fill a litre cylinder with 

 water. Read carefully from 

 the scale on the outside 

 of the vessel the number of 600 



c.c. of water in the cylinder. 

 It is well to examine the scale 

 before doing this in order to 

 note the exact value of each 

 scale-division. Thus, in Fig. 17, 

 there are 10 divisions between 

 the 500 and 600 c.c. marks. 

 Each of these represents there- 

 fore 10 c.c. The level of the 

 liquid surface is curved up- 

 ward near the inner wall of Fig- 17. 

 the containing vessel and the 



-500 



