392 CHARACTERISTIC. CLASS I, 



CHARACTERS OF THE ORDERS. 



CHARACTERS OF THE ORDERS OF CLASS I. 



I. ORDER. GAS. 



a = O'Oooi ... o-ooi4 



Expansible. 

 Not acid. 



II. ORDER. WATER. 



G. = 1-0. 



Liquid. 



Without odour or taste. 



III. ORDER. ACID. 



G. = 0-0015 ... 3-7. 

 Acid. 



IV. ORDER. SALT. 



G. = 1-2 ... 2-9. 



Solid. 



Not acid. , 



