136 ON THE PRESERVATION OF HEALTH. 



necessary for tlie building up of a good consti- 

 tution. Girls should be allowed to sleep one- 

 tbird of their time or eight hours in twenty-four, 

 and when younger — they should sleep more. 

 The young of all the animal creation requii:e 

 more sleep than those that are fully grown: 

 girls, therefore, should retire early that they 

 may obtain sleep enough; rise early and enjoy 

 the benefit of the morning air, which is bracing 

 to their systems. After children are ten years 

 old, they should not sleej) more than two in a 

 bed, and there should not be more than two beds 

 in a room_, unless the room be very large and 

 well ventilated. Girls should rise early and 

 air and set their rooms in order; they should 

 use free ablution of cold water over their breasts 

 and aims, especially as far as they are in the 

 habit of exposing them to the air, as this will 

 prevent their taking cold as easily as they other- 

 wise would. The diet of children should be 

 plain and simple, as their digestive powers are 

 not as strong as those of grown persons. The 

 quantity should always be piroportioned to the 

 age and strength of the child. Much mischief 

 is done by letting children eat too much. They 



