8 IRRIGATION FARMING. 



years and have thoroughly familiarized themselves as to 

 its uses, adaptability, application, etc. Modern travel- 

 ers tell us they have the best constructed works of any 

 people, and many of these works were made prior to the 

 Moorish occupancy. The solid masonry, the handiwork 

 of men living before the advent of the Christian epoch, 



FIO. 3. GRECIAN TYMPANUM WHESL. 



is still extant and in actual use. What was done with 

 irrigating science during the dark ages we know but 

 little. 



Coming down to more modern times, and looking at 

 the western hemisphere through the murky vista of the 

 years, we find that irrigation has existed as an aid to 

 agriculture for many centuries antedating the advent of 

 the Caucasian. Arizona is full of the remains of ancient 

 towns and irrigating canals, and in Taos, Simla !>. Va- 

 lencia and Grant counties, New Mexico, the existing 

 ruins of similar structures point to a dense population 

 existing at some remote period under some form of or- 



