LENGTHS OF RIVERS.
| Miles. | Miles. | ||
| Amazon | 3,750 | Parana | 2,000 |
| Caroni | 400 | Pilcomayo | 1,000 |
| Canca | 600 | Purus | 2,000 |
| Guaviare | 450 | San Francisco | 1,550 |
| Madeira | 2,000 | Tocantins | 1,000 |
| Magdalena | 900 | Uruguay | 800 |
| Meta | 500 | Xingu | 1,300 |
| Miles. | Miles. | ||
| Amazon | 3,750 | Parana | 2,000 |
| Caroni | 400 | Pilcomayo | 1,000 |
| Canca | 600 | Purus | 2,000 |
| Guaviare | 450 | San Francisco | 1,550 |
| Madeira | 2,000 | Tocantins | 1,000 |
| Magdalena | 900 | Uruguay | 800 |
| Meta | 500 | Xingu | 1,300 |