AMERICAN MEN OF SCIENCE 



293 



Soc; Nat. Geog. Soc; Tex. Acad. Stratigraph- 

 ieal geology of the southwest; bibliography. 

 The physiographic conditions of Texas and the 

 southwest. 



Simpson, C(harles) B(aird), Moscow, Idaho (pres- 

 ent address, Department of Agriculture, Pre- 

 toria, Transvaal, South Africa). Entomology. 

 Areata, Cal, Jan. 23, 77. B.S, Idaho, 98; A.M, 

 Cornell, 00, grad. student, 00-01. Special field 

 agent, Div. Entom, U. S. Dept. Agr, 01-03; en- 

 tomologist, Dept. Agr, Transvaal, South Africa, 

 03- Field agent, Div. Entom, U. S. Dept. Agr, 

 00. M.A.A; Ass. Econ. Entom; Wash. Entom. 

 Soc. Insect anatomy and development; eco- 

 nomic entomology. 



Simpson, Cha(rle)s T(orrey), Lemon City, Fla. 

 Zoology, Botany. Tiskilwa, Ills, June 3, 46. 

 Pub. schools. Aid, Div. Mollusks, U. 8. Nat. 

 Mus, 89- Lecturer zool, Georgetown. Cor. 

 mem. Davenport Acad. Naiades; land and 

 fresh water mollusks of the West Indies; flora 

 of Florida. 



Singer, Prof. Edgar A(rthur), Jr, University of 

 Pennsylvania, Philadelphia, Pa. Philosophy. 

 Philadelphia, Nov. 13, 73. A.B, Pennsylvania, 

 92, Ph.D, 94; Harvard, 95-96; senior fellow, 

 Pennsylvania, 97-98. Asst, Harvard, 96; instr. 

 philos, Pennsylvania, 98-03, asst. prof, 03- 

 Philos. Ass; Psychol. Ass. The philosophy of 

 nature. 



Sinkler, Dr. Wharton, 1606 Walnut St, Phila- 

 delphia, Pa. Medicine. Philadelphia, Aug. 7, 

 45. South Carolina, 63-64; M.D, Pennsylvania, 

 08. Practising physician, 6S- Attending phy- 

 sician, Phila. Orthop. Hosp. and Infirmary for 

 Nervous Diseases; consulting physician, State 

 Hosp. for Chronic Insane; consulting neurolo- 

 gist, Bryn Mawr Hosp; Germantown Hosp; 

 trustee, Pennsylvania. Am. Physicians; Am. 

 Med. Ass; Neur. Ass; Philos. Soc; Phila. 

 Neur. Ass; Phila. Path. Soc; fel. Phila. Col. 

 Physicians. Neurology. 



Sisam, Charles H(erschel), Naval Academy Offi- 

 cers' Mess, Annapolis, Md. Mathematics. 

 Cedar Rapids, la, Sept. 8, 78. A.B, Michigan, 

 02; A.M, Cornell, 03, fellow, 03-04. Instr. 

 math, U. 8. Naval Acad, 0^- Math. Soc; 

 Math. Verein. Classification of ruled surfaces; 

 Cremona transformations in space. Surfaces 

 deduced from ruled surfaces by Cremona trans- 

 formations. 



Skinner, Prof. A(aron) N(ichols), Naval Observa- 

 tory, Washington, D. C. * Astronomy. Boston, 

 Mass, Aug. 10, 45. Beloit, 65-66; special 

 student, Dearborn Observatory, Chicago, 

 67-70. Asst. astronomer, U. S. Naval Ob- 

 servatory, 70-98; prof, math, U. 8. N, 98- 

 F.A.A; Astron. and Astrophys. Soc; Astron. 

 Gesell. Meridian circle observations; zone 

 -1350' to -14 10', embracing about 20,000 ob- 

 servations to determine about 9,000 stars for 

 Astron. Gesell. catalogue; discovered four var- 

 iable stars. 



Skinner, C(harles) E(dward), 1309 Singer Place, 

 Wilkinsburg, Pa. Engineering. Redfield, O, 

 May 30, 65. Ohio (Athens), 84-85; M.E, Ohio 

 State, 90. Connected with Lab, Westinghouse 

 Elec. and Mfg. Co, 90-95, elec. engineer, 95- 

 M.A.A; Elec. Eng; Soc. Testing Materials; 

 West. Pa. Eng. Soc ; Pittsburg Acad. High ten- 

 sion and high frequency phenomena ; insulating 

 materials as applied to electrical apparatus; 

 aging of iron and steel in dynamos and motors; 

 insulating varnishes and oils; effect of tempera- 

 ture on insulating materials. Aging of steel; 

 insulating materials and methods. 



Skinner, Prof. Clarence A(urelius), Station A, 

 Lincoln, Nebr. Physics. Loudon Co, Va, Jan. 

 6, 71. B.S, Nebraska, 93; Ph.D, Berlin, 99. 

 Demonstrator physics, Nebraska, 99-01, adj. 

 prof, 01-03, asst. prof, 03- F.A.A; Physical 

 Soc. Passage of electricity through gases. Re- 

 lation of the voltaic series to the electrode drop 

 in gases. Atomic ions in gases. 



Skinner, Prof. E(rnest) B(rown), 210 Lathrop St, 

 Madison, Wis. Mathematics. Redfield, O, Dec. 

 12, 63. A.B, Ohio (Athens), 88; Clark, 91- 

 92; Ph.D, Chicago, 00. Prof, math, Amity, 

 88-91; instr, Wisconsin, 92-95, asst. prof, 95- 

 Math. Soc; Wis. Acad, (sec'y, and ed, 'Trans.'). 

 Groups of quaternary monomial substitutions 

 Linear substitution groups. 



Skinner, Dr. Henry, 716 N. 20th St, Philadelphia, 

 Pa. Entomology. Philadelphia, March 27, 61. 

 Certificate in chem, Pennsylvania, 81, M.D, 84. 

 State entomologist, Pa, 94- Prof, entom, Acad. 

 Nat. Sciences, Phila, 95-00, asst. to curators, 

 01; prof, entom, Pa. Hort. Soc, 02; ed, 'Entom. 

 News,' 90- F.A.A; Entom. Soc. (sec'y and 

 curator, 90-) ; Ass. Econ. Entom; Pa. Hort. 

 Soc; Phila. Acad; N. Y. Entom. Soc; Phila. 

 Geog. Soc. Entomology. Lepidoptera. 



Skinner, Prof. J(oseph) J(ohn), Oneida, N. Y. 

 Mathematics. Putney, Vt, Jan. 13, 42. Ph.B, 

 Yale, 69, C.E, 74, Ph.D, 76. Instr. civil eng, 

 Sheffield Sci. Sch, Yale, 73-74, math, 74-80, 

 math, and French, 80-81; math, Mass. Inst. 

 Tech, 85-96, asst. prof, 96-04. Work with Gen. 

 F. A. Walker on statist, atlas of Ninth Census, 

 73-75. Momentum and' vis viva; galvanometer 

 coils; approximate computations. 



Slagle, Dr. Robert L(incoln), Brookings, S. Dak. 

 Chemistry. Hanover, Pa, March 17, 65. A.B, 

 Lafayette, 87, A.M, 90; Ph.D, Hopkins, 94. 

 Asst. to Prof. Atwater, Wesleyan, 94-95; prof, 

 chem, S. Dak. Agr. Col, 95-97; S. Dak. Sch. 

 Mines, 97-99, pres, 99-06; 8. Dak. Agr. Col, 06- 

 Chem. Soc. The double halides of tin and 

 toluidin. 



Slate, Prof. F(rederick), 2231 College Ave, Berke- 

 ley, Cal. *Mathematical physics. London, 

 England, Jan. 21, 52. B.S, Brooklyn Polytech, 

 71; Berlin, 77-78; Strasburg, 78-79. Instr, 

 Dept. Chem, California, 74-77, prof, physics, 

 91- Physical Soc. Analytic mechanics. 



Slaught, Prof. H(erbert) E(llsworth), University 

 of Chicago, Chicago, Ills. Mathematics. Wat- 



