Direction General of Hydraulic Works 



I. — RIVER PLATE 



This ureal plan executed in relief to the scale of 1:40.000, 

 and covering an approximate area of 3500 square kilome- 

 ters, shows clearly all the particulars of the bed of the 

 Upper River Plate. With its aid the numerous channels 

 and banks that exist and also the great number of ri- 

 vers that form the Parana Delta, as well as the situation 

 of the luminous and other buoys and signals destined to 

 facilitate navigation, can easily be seen. 



This plan also shows the Ports of Buenos Aires and La 

 Plata, with their entrance channels, buoys and beacons, by 

 means of which the access to them is facilitated. 



Six maps have been put up in album form: the follo- 

 wing is a short description of them: 



After having finished the survey of the Upper part of the 

 River Plate the navigable channels have been buoyed. 

 This is one of the most important works carried out. The 

 buoys indicate precisely the route to follow, avoiding, by 

 doing so, the groundings that were formerly so frequent. 

 and that caused so much detriment to the general commerce. 



The luminous buoys, of 5 cubic metres capacity, burn 

 night and day, the greater part of them being supplied 

 with mineral oil gas and the rest with acetylene gas. The 

 gas is taken to the buoys by steamers provided with store- 

 holders which are loaded with gas from a gas factory: 

 both the steamers and gas works were specially constructed 

 for this purpose on the Pintsch Patent Lighting system. 



This plan is a resume of the results of the survey carried 

 out by the staff of the Ministry of Public Works of the 



I. Plan in - relief 

 of the Upper 

 River Plate. 



2. Album with 



maps OF THE 

 River Plate. 



Plan No I.— G n ■ 

 ral Map of the 

 luminous buoying 

 ofthe River Plate 



— Scale I;2000O, 

 Year 1902. 



Map N 2.— Gene- 

 ral Map of the 

 River Plate. 



