 Both dwellings represent the colonial approach of simplified "Regency" and "Tudor" Gothic and are at variance with Gladswood with its more picturesque "perpendicular" effects.The simplified nature of the earlier Lindesay and Carthona are perhaps reflections on the economic situation of the earlier period that may have prevented the extent of detailing found in "Gladswood" or the later still "castellated Gothic" of "Swifts" also at Darling Point.Interestingly, both "Lindesay" and "Carthona" are cited as being derived from Loudon's pattern book.