37 



be added unimportant work to rectify and to clean the 

 eastern channel of the « Hervidero » bar. 



With a depth of 9 feet at the bars situated between the 

 Conception del Uruguay and « Chapicuy and of 8 feet 

 between the latter and Concordia, the conditions of navi- 

 gations in those parts of the middle Uruguay would have 

 improved considerably. 



The coastwise navigation would no longer suffer from 

 the consequences of a prolongated state of a low river and 

 the port of Concordia would be permanently accessible to it. 



What concerns the river steamers, they would nearly al- 

 ways be able to reach the latter port, sometimes tranship- 

 ping into lighters would have to take place below the 

 «Corralito» bar and more exceptionally yet below the 

 « Hervidero » or « Chapicuy » bar, as easily can be com- 

 j)robated by an examination of the curves of the height of 

 water at the ports of Xueva Escocia and Concordia. 



The buoying of the middle Uruguay ought to be carried Buoying, 

 out as far as the port of Colon with luminous buoys tor the 

 same reason for which this system has been proposed for 

 the Lower Uruguay. 



It would be necessary to place this class of buoys at the 

 following points : 



At the South point of the « Almiron » island, one 



At the North point of the Oriental island.. one 



At the bar of « Almiron » .... four 



At the shoal of « Curtiembre » ( Tannery ) . . one 



At « San Francisco » bar six 



being a total of thirteen luminous buoys in this section of 

 the river. From Colon to Concordia it is intended to use 

 cylindrical buoys 1,50 meters long by 1,00 meter diameter, 

 with sights and rudders ; at nearly all the bars the buoying 

 w r ould be completed by directions on shore, indicating the 

 center of the channel, and which if provided with lights, 

 would make navigation of these bad bars easy even if du- 

 ring night time. 



Cylindrical buoys have been adopted, as their construc- 

 tion is cheaper and because repairs can bo easaly executed. 



