_bro_, James THOMSON (1822-1892), F.R.S., Hon. LL.D., Glasgow and Dublin, Professor of Civil Engineering, first at Queen's Coll., Belfast, 1857-1873, then at Glasgow, 1873-1889. Invented the "vortex water-wheel," 1850; numerous memoirs on physical investigations.--["Dict. N. Biog.," and "Ency. Brit."] _bro_, John THOMSON, died young, having contracted hospital fever during medical study at Glasgow. Considered as able as his brothers. _si son_, James Thomson BOTTOMLEY, F.R.S. (q.v.). _si son_, George KING, actuary and mathematician; author of many original papers, and of an authoritative work on actuarial subjects. Sir John Isaac #THORNYCROFT# (b. 1843), LL.D., F.R.S., Vice-President of Inst. of Naval Architecture, etc.; founded shipbuilding works at Chiswick, 1866; introduced improvements in naval architecture and marine engineering, which have promoted high speeds at sea.--["Who's Who."] _me fa_, John FRANCIS (1780-1861), sculptor, pupil of Chantrey; exhibited at the Royal Academy, 1820-1856; his works include busts of Miss Horatio Nelson, Queen Victoria, Prince Albert, and the Duke of Wellington.--["Dict. N. Biog."] _fa_, Thomas THORNYCROFT (1815-1885), sculptor; executed the group of Commerce on the Albert Memorial, and other statues.--["Dict. N. Biog."] _me_, Mary THORNYCROFT (1814-1895), sculptor.--["Dict. N. Biog."] _bro_, William Hamo THORNYCROFT (b. 1850), R.A., sculptor. His works include national monument to General Gordon in Trafalgar Square and in Melbourne; John Bright in Rochdale; Lord Granville in Houses of Parliament; and very many others.--["Who's Who."] Charles Sissmore #TOMES# (b. 1846), F.R.S., late lecturer on dental anatomy at Dental Hosp. of London; Crown nominee on General Medical Council, 1898, etc.; author of a "Manual of Dental Anatomy, Human and Comparative," and of many memoirs on odontology in "Phil. Trans.," etc.--["Who's Who."] _fa_, Sir John TOMES (1815-1895), F.R.S., dental surgeon; invented dental forceps; memoirs on histology of bone and teeth; delivered lectures at Middlesex Hosp., which marked new era in dentistry; induced Royal Coll. of Surgeons to grant license in dental surgery; one of the chief founders of the Odontological Soc., 1856, and of the Dental Hosp., 1858; secured passing of Dentists Act, 1878; wrote well-known treatise on "Dental Surgery," and other works.--["Dict. N. Biog."] _fa bro_, Robert Fisher TOMES (1824-1904), authority on insectivora and chiroptera; edited Bell's "British Quadrupeds"; wrote natural history sections for his own and neighbouring county histories. _me bro_, George SIBLEY, C.E.I., went out to India as a civil engineer, and without influence rose to be chief engineer of the East Indian Railways, and did much important work in bridge-building.