1875 and 1900 over the previous formal garden and Home Farm fields, with many rare specimen trees and shrubs. The top end of Tilgate Lake was extended to Silt Lake, two islands formed and a Cascade created. Also, the Walled Garden was built with a "Head Gardener's Cottage" on its access drive (now a private house). Confusingly, a deer park was established north of the Mansion, occupying the area of the present neighbourhood south of Shackleton Road and west of Worcester Road. This had Fallow deer. A new farmstead called "Stone Barn" was built at what is now the south end of the latter road. In the late 19th century, the Park and Forest became nationally known for several botanical rarities (apparently mostly now extinct here) including the Tunbridge Filmy Fern (Hymenophyllum tunbrigense). On Sarah's death in 1904, the estate went to her son John Ashburner Nix, who died in 1927, and then to his brother Charles George Ashburner Nix; the Nix family is included in Burke's Landed Gentry under the title "Nix of Tilgate." The latter's grandson was the banker Paul David Ashburner Nix, the father of Alexander Nix, the CEO of Cambridge Analytica. Together the brothers were great horticulturalists and members of the Royal Horticultural Society. They planted the Pinetum in 1906, and began conifer plantations in the Forest. A sawmill was built on the A23, at the beginning of a forest ride running east to where the pylons are now. This was called The Avenue. Dinosaurs? Fossilised dinosaur remains have been recovered from a Mesozoic geologic formation named after Tilgate Forest. The find-spot was a quarry at Whitemans Green near Cuckfield, but the name given to the stratum led to the erroneous idea that the Forest was the find-spot. This mistake has influenced scholarly works. The finder was Gideon Mantell, who was collecting in the quarry by 1813 and named the "Tilgate Forest Stratum". The dinosaur concerned was the Iguanodon. Rare orchid A very rare orchid was collected at Tilgate from the late 19th century into the Thirties -Small white orchid (Pseudorchis alba). The nearest colonies are now in mid Wales. Decline Charles was in difficulties by 1932, when he leased the Walled Garden and its greenhouses to FW Burke & Co as a Horticultural research Station. This would have marked the end of intensive gardening at Tilgate, and the loss of flower beds. Before the outbreak