| These MS. charts are forwarded to the admiralty, and form the foundation of the hydrography of the world. |
| In 1713 he was appointed to succeed his father as professor of hydrography. |
| Samples were grouped in several distinct clusters that were generally consistent with the hydrography of the area. |
| Their works covered the range of cosmography, uranography, hydrography, chorogreaphy and topography. |
| Usually separate sheets are prepared for the topography or shore survey and for the hydrography or survey of the water area. |
| He also established schools of marine engineering, hydrography, and cartography. |
