YOKE OF CREOLE OXEN USED FOR THE TRANSPORT OF ^TIMBER ON 

 THE EASTERN CHACO, OR CHACO OF SANTA Fl'j. 



On the Central (or Santiago) Chaco mules are used for transport. 



Photograph by the Author. 



WORKS AT TARTAGAL (EASTERN CHACO) FOR MAKING TANNIC ACID. 



These works, built by powerful firms, are permanent centres, drawing timber from a great stretch 

 of forest, while the saw-mills of the Central Chaco move about freely, to be near the felling sites. 



t~ Photograph by the Author. 

 PLATE XII. To face p. 128. 



