![The Ellesmere Canal Navigation from the River Severn near Shrewsbury, to the River Dee near Chester, and from thence to the river Mersey near to Liverpool [Mapa]](https://cache.getarchive.net/Prod/thumb/cdn8/L3Bob3RvLzE3MDAvMTIvMzEvdGhlLWVsbGVzbWVyZS1jYW5hbC1uYXZpZ2F0aW9uLWZyb20tdGhlLXJpdmVyLXNldmVybi1uZWFyLXNocmV3c2J1cnktdG8tdGhlLTdkNDlmYi0xMDI0LmpwZw%3D%3D/320/225/jpg "The Ellesmere Canal Navigation from the River Severn near Shrewsbury, to the River Dee near Chester, and from thence to the river Mersey near to Liverpool [Mapa]")
Similar
Related
![A Plan of the intented Canal & River Navigation from Thrinkston Bridge to Leicester : shewing its communications with the River Wreak to Meltin, and Likewise (by means of the rivers Soar & Trent) with the Grand Trunk and Erewash Canals [Mapa]](https://cache.getarchive.net/Prod/thumb/cdn8/L3Bob3RvLzE3ODUvMTIvMzEvYS1wbGFuLW9mLXRoZS1pbnRlbnRlZC1jYW5hbC1hbmQtcml2ZXItbmF2aWdhdGlvbi1mcm9tLXRocmlua3N0b24tYnJpZGdlLXRvLWUyYjBhNC02NDAuanBn/40/25/webp "A Plan of the intented Canal & River Navigation from Thrinkston Bridge to Leicester : shewing its communications with the River Wreak to Meltin, and Likewise (by means of the rivers Soar & Trent) with the Grand Trunk and Erewash Canals [Mapa]")
![A Plan of the Leicester Shire and Northampton shire intended Union Canal ; shewing its connection with the Grand Junction Canal at Northampton and with the River Trent by means of the Leicester Navigation : by which Channels it will communicate with most of the present Inland Navigations in the Kingdom [Mapa]](https://cache.getarchive.net/Prod/thumb/cdn8/L3Bob3RvLzE3MDAvMTIvMzEvYS1wbGFuLW9mLXRoZS1sZWljZXN0ZXItc2hpcmUtYW5kLW5vcnRoYW1wdG9uLXNoaXJlLWludGVuZGVkLXVuaW9uLWNhbmFsLXNoZXdpbmctZGEyZmQyLTY0MC5qcGc%3D/40/51/webp "A Plan of the Leicester Shire and Northampton shire intended Union Canal ; shewing its connection with the Grand Junction Canal at Northampton and with the River Trent by means of the Leicester Navigation : by which Channels it will communicate with most of the present Inland Navigations in the Kingdom [Mapa]")
![Plan of the River Tyne, from the Ber or Mouth Thereof to the Mead of South Fields [Mapa]](https://cache.getarchive.net/Prod/thumb/cdn8/L3Bob3RvLzE3ODcvMTIvMzEvcGxhbi1vZi10aGUtcml2ZXItdHluZS1mcm9tLXRoZS1iZXItb3ItbW91dGgtdGhlcmVvZi10by10aGUtbWVhZC1vZi1zb3V0aC1maWVsZHMtMTQyN2IzLTY0MC5qcGc%3D/40/25/webp "Plan of the River Tyne, from the Ber or Mouth Thereof to the Mead of South Fields [Mapa]")
![Bowles's Draught of the River Thames, from it's Spring in Gloucester-shire, to it's Influx into the Sea : with a Table of all the Locks, Wears, and Bridges thereupon, Shewing the Tolls Payable at each and their distance by Water from one another [Mapa]](https://cache.getarchive.net/Prod/thumb/cdn8/L3Bob3RvLzE3OTMvMTIvMzEvYm93bGVzcy1kcmF1Z2h0LW9mLXRoZS1yaXZlci10aGFtZXMtZnJvbS1pdHMtc3ByaW5nLWluLWdsb3VjZXN0ZXItc2hpcmUtdG8tYzMyZTFjLTY0MC5qcGc%3D/40/12/webp "Bowles's Draught of the River Thames, from it's Spring in Gloucester-shire, to it's Influx into the Sea : with a Table of all the Locks, Wears, and Bridges thereupon, Shewing the Tolls Payable at each and their distance by Water from one another [Mapa]")
![Plan of the Intended Shrewsbury Canal [Mapa]](https://cache.getarchive.net/Prod/thumb/cdn8/L3Bob3RvLzE3OTMvMTIvMzEvcGxhbi1vZi10aGUtaW50ZW5kZWQtc2hyZXdzYnVyeS1jYW5hbC1tYXBhLWNmYWRiNi02NDAuanBn/40/37/webp "Plan of the Intended Shrewsbury Canal [Mapa]")
![A Plan of the intended Navigable Canal from Basingstoke to the River Wey [Mapa]](https://cache.getarchive.net/Prod/thumb/cdn8/L3Bob3RvLzE3ODcvMTIvMzEvYS1wbGFuLW9mLXRoZS1pbnRlbmRlZC1uYXZpZ2FibGUtY2FuYWwtZnJvbS1iYXNpbmdzdG9rZS10by10aGUtcml2ZXItd2V5LW1hcGEtMmUwNzdkLTY0MC5qcGc%3D/40/20/webp "A Plan of the intended Navigable Canal from Basingstoke to the River Wey [Mapa]")
The Ellesmere Canal Navigation from the River Severn near Shrewsbury, to the River Dee near Chester, and from thence to the river Mersey near to Liverpool [Mapa]
Summary
Comprende parte de los condados ingleses de Cheshire y Shropshire
In the 17th century, maps took a huge leap forward. Mathematical and astronomical knowledge necessary to make accurate measurements had evolved. English mathematicians had perfected triangulation: navigation and surveying by right-angled triangles. Triangulation allowed navigators to set accurate courses and produced accurate land surveys. Seamen learned to correct their compasses for declination and had determined the existence of annual compass variation. Latitude determination was greatly improved with the John Davis quadrant. The measurement of distance sailed at sea was improved by another English invention, the common log. Longitudinal distance between Europe and Québec was determined by solar and lunar eclipses by the Jesuit Bressani in the 1640s and by Jean Deshayes in 1686. With accurate surveys in Europe, the grid of the modern map began to take shape.
Tags
Date
Location
Source
Copyright info
