— 73 - 



well as the corresponding different heights of water 

 at Concepcion del Uruguay and Concordia. 

 Sheets 14 & 15. Sections of velocities at ConcepcioD del 

 Uruguay and Xu ova Escocia for different heights 

 of water and conditions of currents. 



Pages 1 & 2. Types of the signals indicating the centre of photograph Album 

 the dredged channel in the bars Banco Grande and 

 Altos y Bajos. They carry lights during the night 

 and a gauge which indicates the minimum depth 

 in the dredged channel. 



» 3 & 4. Views of the mole for ocean traffic a i Concep- 

 cion del Uruguay when the river is very high. 



» 5. The mole of Concepcion del Uruguay as seen from 

 up river. 



» 6, 7 & 8. Vessels being worked at the mole of Con- 

 cepcion del Uruguay. 



» 9. Access from the shore to the mole of Concepcion 

 del Uruguay, showing the hut for the automatic 

 tide-gauge on the right hand side, and that of the 

 watchman on the left. 



» 10. The same access at a high flood. 



» 11 & 12. The bridge giving access to the mole during 

 a high flood. 



» 13. Upper part of the bridge giving access to the mole, 

 with Custom House and «Sub Prefectura» (harbour 

 police ). 



» 14. Entrance to the access channel for the inner Port 

 for coasting vessels at Concepcion del Uruguay. 



» 15 & 16. Views of the above-mentioned entrance 

 channel. 



» 17 & 18. Dredgers for the excavation of the entrance 

 channel. 



» 19 & 20. Dredgers operating in the inner port for 

 coasting vessels of Concepcion del Uruguay. 



» 21 & 22. Slip of the Ministry of Public Works at Con- 

 cepcion del Uruguay. 



» 23 & 24. Works for improving and extending the slip- 

 ways at Concepcion del Uruguay. 



» 25. Dredgers working in the River Uruguay. 



