[1-2] SIR EDWARD SABINE (1788-1883) (General). Letters to and from Alfred Newton (n.d.) [3-6] WILLIAM HERBERT ST. QUINTIN (1851-1933) (Scampston Hall, Rillington, York). Letters (1883-89) [7-8] GEORGE SAMUEL SALE (1831-1922) (Fellow of Trinity, 1856-64; to New Zealand 1860, Professor of Classics, Otago University, 1870-1908). Letters (1869-71) [9-11] C.S. SALMON (Captain; brother of John D. Salmon). Letters (1861) [12-16] JOHN DREW SALMON (1802-59) (company manager, ornithologist, bot- anist). Letters to Alfred Newton (1855-57); copy letter to him, from G.H. Kunz (1857) [17-24] SAMUEL JAMES AUGUSTUS SALTER (1825-97) (dental surgeon, botanist). Letters (1867-85) [25] THOMAS MORGAN BELL SALTER (1859- ) (clergyman). Letter (1877) [26-28] T. SALVATORI (Turin). Letters (1888-89) [29-30] ANTHONY SALVIN (1799-1881) (architect, son of Anthony Salvin, architect; brother of Osbert Salvin). Letters (1863) [31-40] EMMELINE SALVIN (sister of Osbert Salvin). Letters (1862-63) [41-47] FRANCIS HENRY SALVIN (1817-1904) (writer on falconry). Letters (1872-79) [48] CAROLINE SALVIN (1838-1917) (wife of Osbert Salvin). Letter (1884) [49-313] OSBERT SALVIN (1835-98) (ornithologist, especially Central American; Strickland Curator of Ornithology, Cambridge 1874-82). Letters to Alfred Newton (1856-93), letter to him, from W. Wilson Saunders (1868) [314] WILLIAM WILSON SAUNDERS (1809-79) (entomologist, botanist, writer). Letter to Osbert Salvin (1868) [315-421] HOWARD SAUNDERS (1835-1907) (ornithologist, traveller; editor of Ibis, 1883-88, 1894-1900, finished 4th edition of Yarrell's British birds). Letters (1865-87) [422] ROBERT THOMAS HUTHERSAL SAMMONS (1841-97) (clergyman). Letter (1882) [423] SAMPSON LOW, MARSTON, SEARLE AND RIVINGTON (booksellers, publishers). Letter (1885) [424] ANTHONY SAVAGE (Hornby, Catterick, Yorks). Letter (1862) [425-430] SAMUEL P. SAVILLE ('Private zoologist' to Prince of Wales). Letters (1862-63) [431-432] HENRY LINKMYER SAXBY (1836-73) (physician; ornithologist, author, The birds of Shetland, 1874). Letters (1871) [433] STEPHEN HENRY SAXBY (1831-86) (clergyman, brother of H.L. Saxby, edited Birds of Shetland, 1874). Letter (1873) [434-438] JOHN SAYER (natural history dealer, Norwich). Letters to Edward Newton (1852-53) [439-455] JOHN SCALES (1794-1884) (ornithologist, entomologist, Principal, Royal Agricultural College, 1844-51). Letters (1855-67) [456-472] ROBERT HENRY SCALES (son of John Scales). Letters (1884-88) [473-474] FRANZ EILHARD SCHULZE (1840-1921) (German anatomist, zoologist). Letters (1879) [475-993] PHILIP LUTLEY SCLATER (1829-1913) (Secretary, Zoological Society of London, 1859-1902). Letters (1857-93) [994] WILLIAM LUTLEY SCLATER (1863-1944) (son of Philip Sclater; zoologist; Director, South African Museum, Cape Town 1896-1906; Hon. Secretary, Royal Geographical Society; editor, Ibis, 1913-30). Letter to Alfred Newton (1887) [995-996] ALEXANDER SCOTT (Kinterrach, Forres, Scotland). Letters from and to Alfred Newton (1889-91) [997] ARTHUR J. SCOTT (Rotherfield Park, Alton, Hants). Letter to Lord Lilford, sent on to Alfred Newton (1884) [998] JOHN SCOTT (entomologist). Letter (1871) [999-1000] JOHN FAIRBAIRN SCOTT (son of John Scott). Letters (1871) [1001-1002] W.B. SCOTT (Chudleigh, Devon). Letters (1872-75) [1003] GIDEON DELAPLAINE SCULL (1824-89) (miscellaneeous writer). Letter (1881) [1004-1008] ALFRED FORBES SEALY (1831-94) (brother of Sparks B. Sealy; Principal of Rajah's High School, Ernacullum, and Director of Public Instruction, South India, retired 1893). Letters (1856-75) [1009-1020] SPARKS BELLETT SEALY (1825-94) (clergyman). Letters (1862-67) [1021-1022] J. SEATON (natural history dealer, Ludgate Hill, London). Letters (1853) [1023-1025] ADAM SEDGWICK (1854-1913) (Zoologist; Fellow of Trinity, 1880- 1913; Lecturer, Reader in Animal Morphology, 1883-97; Professor of Zoology and Comparative Anatomy (in succession to Alfred Newton), 1907-09; Professor of Zoology, Imperial College, South Kensington 1909-13). Letters (1882-83) [1026] FREDERIC SEEBOHM (1833-1912) (historian; brother of Henry Seebohm). Letter (1876) [1027-1056] HENRY SEEBOHM (1832-95) (steel manufacturer, Sheffield; ornithologist, writer). Letters (1875-89) [1057-1069] HARRY GOVIER SEELEY (1839-1909) (geologist, palaeontologist; assistant to Adam Sedgwick, 1859-71; Professor of Geography, King's College London, and Geography and Geology, Queen's College London, 1876-96, Professor of Geology and Mineralogy, King's College London, 1896-1909). Letters (1872-85) [1070] GEORGE BURRITT SENNETT (1840-1900) (businessman, naturalist). Letter (1883) [1071-1076] ROBERT SERVICE (Maxwelltown, Dumfries). Letters (1886-88) [1077-1079] KAY SEVILLE (Royton, Lancs). Letters (1889) [1080-1085] DAVID SHARP (1840-1922) (physician; Curator of Insects, CU Museum of Zoology; President of Entomological Society 1887- ; editor, Zoological Record, 1891). Letters (1892-93) [1086-1263] RICHARD BOWDLER SHARPE (1847-1909) (Senior Assistant, Department of Zoology, British Museum, 1872-95; Assistant Keeper of Vertebrates, 1895-1909). Letters (1868-86) [1264-1278] GEORGE ERNEST SHELLEY (1840-1910) (geologist, ornithologist). Letters (1870-85) [1279-1284] CHARLES WILLIAM SHEPHERD (1838-1920) (clergyman). Letters (1866-85) [1285] SIR ARTHUR EVERETT SHIPLEY (1861-1927) (Fellow of Christ's, 1887- 1927; Demonstrator in Comparative Anatomy 1886-94, Lecturer in Advanced Morphology of Invertebrata 1894-1908, Reader in Zoology 1908-20). Letter (1886) [1286-1288] ROBERT WILSON SHUFELDT (1850-1934) (zoologist; Smithsonian Institution, Washington). Letter (1890) [1289] CARL FREDERICK SIEMSEN (natural history dealer, Reykjavik). Letter (1858) [1290-1295] CARL SIEWERS (translator). Letters (1884-88) [1296] GEORGE SIM (Aberdeen; naturalist, taxidermist). Letter (1873) [1297-1299] T.R. SIMONDS (Brighton). Letters (1873-76) [1300-1304] ELIZABETH SIMPSON (mother of Wilfred Simpson). Letters (1859) [1305] AUGUSTUS CONSTANTINE SINCLAIR (writer on Jamaica). Letter (1880) [1306-1312] ALFRED LAW SINCLAIR (Captain, Bombay Staff Corps). Letters (1872) [1313] S[?]. SIVERTSEN. Letter (1858) [1314-1340] WALTER WILLIAM SKEAT (1835-1912) (philologist). Letters (1870-93) [1341-1342] ROBERT SCOT SKIRVING (1859-1956) (surgeon). Letters (1881) [1343] WALTER PERCY SLADEN (1849-1900) (zoologist). Letter (1883) [1607-1656] HENRY HORROCKS SLATER (1851-1934) (clergyman, naturalist, writer). Letters (1874-88) [1344] JOHN SMALL (1828-86) (University Librarian, Edinburgh). Letter (1876) [1345] ROBERT SMALL (Edinburgh; printer / publisher?). Letter (1876) [1346] ANDREW SMART (1825-1911) (physician, medical writer). Letter (1869) [1347-1356] THOMAS GREGORY SMART (1825-1911) (clergyman). Letters (1885-86) [1357-1359] J. SMIT (engraver; 19 Grafton Street, London). Letters (1866) [1366-1564] ALFRED CHARLES SMITH (1822-98) (clergyman, naturalist, travel writer). Letters (1852-93) [1360-1361] SIR ANDREW SMITH (1797-1872) (Director-General, Army Medical Department). Letters (1868) [1362-1365] BENJAMIN LEIGH SMITH (1828-1913) (barrister, yachtsman, Arctic explorer). Letters (1871-72) [1565-1606] CECIL SMITH (1826-90) (ornithologist; lawyer). Letters to Alfred Newton (1870-85); letters to him, from Noel Welman, Charles Edwards (1871) [1657-1670] G. SMITH (The Priory, Great Yarmouth). Letters (1882-88) [1671] J. SMITH (translator, copyist). Letter (1875) [1672-1677] JAMES SMITH (Assembly's School House, Unst, Shetland). Letters to Alfred and Edward Newton (1854-61) [1678] J.P.G. SMITH (43 Russell Square). Letter (1877) [1679-1689] JOHN ALEXANDER SMITH (Royal Physical Society, Society of Antiquaries of Scotland). Letters (1879-81) [1690-1695] WILLIAM SMITH (Clerkenwell; colourist). Letters (1865-67) [1696-1715] SIR WILLIAM SMITH (1813-93) (lexicographer; editor, Quarterly Review, 1867-93). Letters (1881) [1716-1731] WILLIAM ROBERTSON SMITH (1846-94) (theologian; Semitic scholar; editor, Encyclopaedia Britannica (9th edition), 1881-88). Letters (1882-85) [1732-1739] HENRY SMURTHWAITE (Richmond, Yorks). Letters to Edward and Alfred Newton (1857-61) [1740-1744] EDWARD SOLLY(1819-86) (chemist, antiquary). Letters (1877-82) [1745] JAMES E. SOMERVILLE (Dundee). Letter (1882) [1746-1747] HENRY CLIFTON SORBY (1826-1908) (geologist). Letters (1875-84) [1748-2091] THOMAS SOUTHWELL (1831-1909) (Norfolk and Norwich Natural- ists' Society). Letters to Alfred Newton (1853-93); letters to him, from Edward Etheridge, John B. Stedman, Cluxton Mason (1884), Arthur Elwes, Joseph Brown (1885), Henry Paynter, Edward Boult, Frederick Long, William Tolman (1888) [2092-2094] ROBERT F. SPENCE (Commercial Bank of Scotland, Kirkwall, Orkney). Letters (1883) [2095] H. ALEX SPENCER (Clifton, Bristol). Letter (1880) [2096-2097] HARRIET SPENCER (wife of George John Trevor Spencer (1799-1866), Bishop of Madras, 1837-49). Letters (1873) [2098] J. SPURLING (Wakefield). Letter (1879) [2135-2264] HENRY TIBBATS STAINTON (1822-92) (entomologist; secretary, Zoological Record Association, 1871-86). Letters (1864-86); letter to him, from William Mattress (1871) [2099-2101] EDWARD STANFORD (1827-1904) (engraver, publisher, cartographer). Letters (1864-65) [2102-2103] JOHN B. STEDMAN (Rudham, Norfolk). Letters to and from Alfred Newton (1884) [2104-2106] THOMAS STEELE (21 Upper Brook Street, London). Letters to and from Alfred Newton (1852), letter to him, from Richard Owen (1852) [2107-2108] JOHANNES JAPETUS SMITH STEENSTRUP (1813-97) (Professor of Zoology, Copenhagen University). Letters (1865) [2109-2111] DARELL STEPHENS (Wadebridge, Cornwall). Letters (1885) [2112] HENRY STEPHENS (Lieutenant, HMS Orontes, Portsmouth). Letter (1867) [2113-2134] W.J. STERLAND (ornithologist, naturalist). Letters (1869-81) [2265-2290] JOHN CRACE STEVENS (auctioneer, natural history dealer). Letters (1852-57) [2291-2315] SAMUEL STEVENS (1817-99) (natural history dealer, naturalist, brother of John Stevens). Letters (1857-71) [2316] _____ STEVENS. Letter to him, from Alfred Newton (1895) [2317-2320] FREDERICK STEVENSON (son of Henry Stevenson). Letters (1889) [2321-2750] HENRY STEVENSON (1833-88) (Proprietor, Norwich Chronicle, naturalist). Letters to Alfred Newton (1854-86); letters to him, from Henry Dugmore, George Reece, H.J. Elwes, W.M.Lowe, J.H. Gurney, Joseph Clarke, Rachel Jones (1867-82) [2751-2757] SIR GEORGE GABRIEL STOKES (1819-1903) (1st Baronet, math- ematician, physicist). Letters (1868-69) [2758] OLIVER STOKES (Royal Engineers). Letter (1865) [2759-2784] CATHERINE D.M. STRICKLAND (wife of Hugh Edwin Strickland (1811-53), naturalist). Letters (1864-85) [2785] GEORGE J. STRONACH (Burghead). Letter to H.A. Macpherson (clergyman) (1889) [2786-2787] CHARLES ISHAM STRONG (1838- ) (Lieutenant-Colonel; Thorpe Hall, Peterborough). Letters (1871) [2788] A.G. STUART. Letter (1862) [2789] WILLIAM STUBBINGS (Zoology Museum). Letter (1873) [2790-2807] WILSON STURGE (Quaker, businessman, Birmingham). Letters to Alfred and Edward Newton (1855-68 ) [2808-2814] FREDERIC RICHARD SURTEES (d.1889) (barrister). Letters (1868-70) [2815-2816] SVENDSON & JOHNSON (Newcastle, shippers). Letters to and from Edward Newton (1857) [2817] J.C. SWAILES. (Beverley, Yorks). Letter (1888) [2818-2821] CHARLES ANTHONY SWAINSON (1820-87) (Lady Margaret's Professor of Divinity, 1879-87, Master of Christ's, 1881-87). Letters to and from Alfred Newton (1886) [2826-2860] ROBERT SWINHOE (1836-77) (consul, orientalist, botanist). Letters (1862-77) [2822-2825] CHRISTOPHER SYKES (1831-92) (MP). Letters (1869-71)