Two years later he succeeded Challis as director of the Observatory, where he resided until his death.
- English Law: Wolstenholme, Brinton and Cherry, Conveyancing and Settled Land Acts (London, 9th ed., 1905); Hood and Challis, Conveyancing and Settled Land Acts (London, 7th ed., 1909); Foa, on Landlord and Tenant (London, 4th ed., 1907); Woodfall, on Landlord and Tenant (London, 18th ed., 1907); Fawcett, Landlord and Tenant (London, 3rd ed., 1905).
By September 1845 he obtained his first solution, and handed to Professor Challis, the director of the Cambridge Observatory, a paper giving the elements of what he described as "the new planet."
The latter was struck by the coincidence, and mentioned it to the Board of Visitors of the Observatory, James Challis and Sir John Herschel being present.
Meanwhile Airy had in July suggested to Challis that the planet should be sought for with the Cambridge equatorial.
On the announcement of the fact, Herschel and Challis made known that Adams had already calculated the planet's elements and position.