Codex Arundel

[clarification needed] The codex is a collection of Leonardo's manuscripts originating from every period in his working life, a span of 40 years from 1478 to 1518.

From Leonardo's text, it appears that he gathered the pages together, with the intention of ordering and possibly publishing them.

[4] The manuscript was purchased in the early 17th century by Thomas Howard, 2nd Earl of Arundel (1585–1646), art collector and politician.

His grandson, Henry Howard, 6th Duke of Norfolk (1628–1684), presented it to the newly-founded Royal Society in 1667.

[6] On 30 January 2007 the manuscript became part of the British Library's project "Turning the Pages", when it was digitised along with Codex Leicester, and became available in the 2.0 format.