[1-18] JOHN JAMES DALGLEISH (1836-1916) (landowner). Letters (1875-86) [19-37] WILLIAM SWEETLAND DALLAS (1824-90) (entomologist, translator). Letters (1865-71) [38-39] ROBERT DAMON (1814-89) (palaeontologist, geologist, writer). Letters to and from Alfred Newton (1886-88) [40-41] ROBERT FERRIS DAMON (1845-1929) (son of Robert Damon; natural history dealer). Letters (1887) [42-52] CHARLES GEORGE DANFORD (1843-1928) (barrister, naturalist, collector). Letters (1867-79) [53-64] CHARLES ROBERT DARWIN (1809-82) (naturalist, writer). Letters (1863-79) [65-66] EMMA DARWIN (1808-96) (wife of Charles Darwin). Letters (1863-87) [67-74] SIR FRANCIS DARWIN (1848-1925) (botanist, writer). Letters (1873-1903) [75-76] SIR GEORGE HOWARD DARWIN (1845-1912) (mathematician, writer; Plumian Professor of Astronomy, 1883-1912). Letters (1882) [77] GERALD STANLEY DAVIES (1845-1927) (Assistant Master of Charterhouse, 1873-1905, Master, 1908-27). Letter (1881) [78-92] JOSEPH BARNARD DAVIS (1801-81) (craniologist, writer). Letters (1857-66) [93-111] SIR WILLIAM BOYD DAWKINS (1837-1929) (palaeontologist, antiquary; Professor of Geology, Manchester University, 1874-1908). Letters (1869-85) [112-116] FRANCIS DAY (1829-89) (ichthyologist, writer). Letters to Alfred Newton (1883-84); letter to him, from T.Q. Couch (1884) [118-120] HENRY DENNY (1803-71) (entomologist; Curator of Museum of Leeds Philosophical and Literary Society). Letters (1869) [121-122] G. DEWAR (Andover, Hampshire). Letters (1881) [123] WILLIAM F. DEWEY (London). Letter (1880) [124-133] EDWARD MAY DEWING (1823-99) (cricketer, lieutenant). Letters to Alfred Newton (1866-87); letter to him, from Henry Prigg (1871) [134] THOMAS DICKSON (museum curator, editor). Letter (1881) [135] T.J.L. DILLON. Letter (1870) [136-146] JAMES DIXON (1814-96) (ophthalmic surgeon, writer). Letters (1877-87) [147-148] NICHOLAS FRANK DOBRéE (1830-1908) (collector, Hull). Letters (1862) [149-158] GEORGE EDWARD DOBSON (1844-95) (zoologist, writer; Curator, Museum of Royal Victoria Hospital, Netley, Southampton). Letters (1880) [159-162] CHARLES DODE (Paris, natural history dealer). Letters (1871) [163-171] WILLIAM HENRY DOEG (d.1916) (bank clerk, Manchester). Letters (1881-84) [172-173] F. DOGGETT (Cambridge). Letters (1885-86) [174] FELIX ANTON DOHRN (1840-1909) (German Darwinist). Draft letter to him, from Alfred Newton (1870) [175] HENRY HONYWOOD D'OMBRAIN (c.1817-1905) (clergyman, naturalist). Letter (1879) [176-197] H.A. DOMBRAIN (son of Henry Honywood D'Ombrain). Letters to Alfred Newton (1879-86); letter to him, from William Delmar (1879) [198-200] SIR WILLIAM COMPTON DOMVILE (1825-84) (Santry House, Dublin). Letters (1854-56) [201] 12TH BARON DORMER (JOHN BAPTIST JOSEPH DORMER) (1830- 1900). Letter (1874) [202-203] HENRY DOUBLEDAY (1808-75) (naturalist, Quaker, writer). Letters (1864) [204-205] CHARLES MONTAGU DOUGHTY (1834-1926) (poet, traveller, writer). Letters (1885) [206] CAMPBELL DOUGLAS (1828-1910) (architect, Glasgow). Letter (1884) [207] JOSEPH[?] DOWLING (Clontorf, Ireland; civil servant, Local Government Board). Letter (1877) [208-507] HENRY EELES DRESSER (1838-1915) (iron and steel merchant, London; Secretary, British Ornithological Union 1882-88; writer, A history of the birds of Europe). Letters (1860-93) [508-509] JOSEPH WILLIAM DRESSER (brother of H.E. Dresser?). Letters (1871) [510-547] HENRY MAURICE DRUMMOND-HAY (1814-96) (colonel, naturalist). Letters to Alfred Newton; letter to him, from George Mackenzie (1856-81) [548] 3RD EARL OF DUCIE (HENRY JOHN MORETON) (1827-1921). Letter (1876) [549-551] GEORGE DUDLEY (Kinver, Stourbridge). Letters (1874-79) [552-554] RICHARD DUFF (visitor from Sweden). Letters (1869) [555-559] JOSEPH H. DUNN (natural history dealer, Stromness, Orkney). Letters (1863-69) [560-572] ROBERT DUNN (bird dealer, first at Kelister, Shetland, then Stromness, Orkney). Letters (1852-55) [573-575] JOHN DUNS (1820-1909) (clergyman; Professor of Natural Science, New College Edinburgh 1854-1903). Letters (1871-72) [576-579] WILLIAM STEWART MITCHELL D'URBAN (1837-1934) (Curator, Devon and Exeter Albert Memorial Museum and Free Library). Letters (1871-75) [580-599] HENRY DURNFORD (1852-78) (natural history collector). Letters (1871-75) [600-603] W. ARTHUR DURNFORD (brother of Henry Durnford). Letters (1875-83)