Horse-carrying Ships. 35 



All decks which carry horses, and which are 

 below the exposed deck, should be kept per- 

 fectly dry, so that the hay which happens to 

 fall out of the hay nets or feeding troughs may 

 not become wet, the decks slippery, and the 

 dung saturated with water. With this object, 

 no cook houses or washing houses should be 

 allowed on these decks. 



A ship painted white is cooler when exposed 

 to the rays of the sun than a similar ship of 

 a darker colour, because white objects reflect 

 light better than darker ones. The rays of 

 the sun consist partly of rays of heat, and 

 partly of rays of light, the latter being con- 

 verted into the former when they fall on an 

 object which does not reflect them. 



If a ship is rolling so much as to endanger 

 the safety of the horses on board, she should 



