Letter from John Colam of the Royal Society for the Prevention of Cruelty to Animals, to Philip Lutley Sclater regarding the serpent feeding in the reptile house being a healthy amusement for children and young persons

Letter from Edmund B d'Auvergne to Philip Lutley Sclater regarding the feeding of live animals to snakes in the Reptile House

Letters from Higginson and Vigors to Philip Lutley Sclater regarding the proposed Regent's Canal Railway

Letters from Thomas Hillier to Philip Lutley Sclater regarding complaints made about the nuisance arising from the drainage of the gardens of the Zoological Society of London into Regent's Canal

Letters from Murray M Johnson to Philip Lutley Sclater regarding the Zoological Society of London being liable for a surveyor's fee, the Society's position as tenants, sewers and drains in the gardens, a bill in chancery regarding pheasants which were claimed by the Acclimatisation Society, the lease for the piece of ground on the north side of the canal, the purchase of premises situated in Hanover Square and Oxford Street, and Regent's Canal railway

Letters from J & R Kemp and Co to Philip Lutley Sclater regarding Regent's Canal City and Docks Railway Bill

Letters from William Saville Kent of the Museum and Institute of Pisciculture Society Limited, to Philip Lutley Sclater regarding the establishment of a marine observatory and laboratory in connection with the Brighton Aquarium, his appointment as Inspector of Fisheries to the Government of Tasmania, his application to become a Fellow of the Zoological Society of London, his inspection of the fish house, enquiries about the vacant post of Prosector, and a proposed British Zoological Station for the study of marine animals and plats with relation to the advancement of the sciences of biology and economic pisciculture

Letters from North Metropolitan Railway and Canal Co. to Philip Lutley Sclater regarding drainage from the Gardens of the Zoological Society of London into Regent's Canal

Letter from Regent's Canal City and Docks Railway to Philip Lutley Sclater regarding Regent's Canal

Letters from Regent's Canal Company to Philip Lutley Sclater regarding the draining from the Gardens of the Zoological Society of London into Regent's Canal, and the proposed railway