344 WATER. 



with the muriatic acid of the salt water, 

 and produces a cloudiness. 



Q. Why does a BLACK HAT turn RED at the 

 SEA SIDE ? 



A. The muriatic acid of the sea-water 

 disturbs the gallic acid of the black dye, 

 and turns it red. 



Q. Of what is SOAP made ? 



A. Of kelp (or the ashes of sea-weed 

 dried and burnt in a pit) mixed with oil 

 or fat. 



YELLOW SOAP is made of whale-oil, soda, and resin. 

 SOFT SOAP is made of oil and potash, HABD SOAP of 

 oil and soda. 



Q. Why does WATER CLEAN dirty LINEN ? 



A. Because the oxygen of the water 

 attaches itself to the stains of the linen, 

 and dissolves them ; as oxalic acid 

 dissolves ink spots. 



Q. Why does SOAP greatly INCREASE the 

 cleansing power of water ? 



A. 1st Because soap increases the 

 oxygen of the water : and 



2ndly It neutralizes the grease of the 

 things washed. 



Q. Why is RAIN WATER SOFT ? 



