60 



2. Portfolio of 

 Maps of the Ri- 

 ver Uruguay. 



for the Study of the River Uruguay under the direction 

 of the Direction General of Hydraulic Works. 



The 21 maps which this portfolio contains are of an 

 exploration of the Upper River Uruguay ( from Concordia 

 to Santo Tome ), of the survey of the Middle Uruguay 

 ( from Concordia to Concepcion ), and of the survey of the 

 Lower Uruguay from Concepcion to its mouth. 



Besides these maps there are others with details of the 

 parts that are difficult to navigate ; they are drawn to a 

 scale of 1 : 10.000 and show the improvements and the 

 buoying that has been projected or executed. 



A detailed list of these maps is given at the end of the 

 booklet. 

 3. portfolio of This portfolio contains 15 sheets showing the most impor- 



the Plans show- , . . _, TT -. 



ing the studies tant hydraulic features ol the River Uruguay, such as ins- 

 tantaneous sections, studies of the tides and slopes, graphic 

 demonstrations of hydrometric observations, and studies of 

 the flow of water and velocities at different places, etc. 

 In the corresponding Appendix details of these plans 



of the River 

 guay. 



4. Descriptive Me- 

 moir. 



5. Allium with Pho- 

 tographs 



are given. 



For the benefit of all who take an interest in the studies, 

 surveys and works that have been carried out in the 

 River Uruguay, a descriptive memoir has been prepared, 

 which deals with the studies and projects for the impro- 

 vement of this river. 



This album, like those above mentioned, contains views 

 of the different points of the river, of the works, dredgers, 

 steamers and other craft at the disposal of the Commission, 

 signal for navigation, etc. Details of these photos will be 

 found in the last appendix of this booklet. 



IV. — THE MILITARY PORT OF BAHIA BLANCA 



I. Plan of the Fs- 

 tuary of Bahia 

 Blanca. 



This plan shows the topography and hidrography of the 

 estuary of Bahia Blanca, and the relative position of the 

 Military Port, located in Punta Alta; of the commercial 

 Port belonging to the Ferro Carril del Sud (Southern R.R. ) 

 located near the Arroyo Naposta; of the commercial Port of 

 the Ferro Carril Bahia Blanca y Nor-Oeste (Bahia Blanca 



