The preparation of nitre (saltpetre) hub-cap Captain John Valentine Carden began

Captain John Valentine Carden began experimenting with light car design in 1913

August Horch set up car manufacturing companies initially in his own name

dashing them to destruction

Interior view of Bridewell Hall

The preparation of nitre (saltpetre) hub-cap Captain John Valentine Carden beganThis plate forms part of Johann Rudolf Glauber's treatise on 'The Prosperity of Germany', and illustrates various stages in 'the Preparation of Salt petre' (nitre). The two images at the top show 'the manner of Boiling Salt petre, and by what means a Lixivium is to be made out of a Nitrous Earth', according to the methods of another German chemist, Lazarus Ercker. The lower image shows the preparation of the 'Lixivium' of saltpetre from horse dung or