AMERICAN MEN OF SCIENCE 



91 



mem. Council) ; Archeol. and Numis. Soc; Am. 

 Dialect Soc; Pa. Hist. Soc; London Soc. Arts. 

 Child-study; educational psychology; improved 

 apparatus for humid assay of silver. 



DuBois, Dr. W(illiam) E(dward) B(urghardt), 

 Atlanta University, Atlanta, Ga. History, So- 

 cial science. Great Barrington, Mass, Feb. 23, 

 68. A.B, Fisk, 88; A.B, Harvard, 90, fellow, 

 90-92, A.M, 91; Berlin, 92-94; Ph.D, Harvard, 

 95. Prof, classics, Wilberforce, 94-96; asst. 

 sociol, Pennsylvania, 96-97; prof. econ. and 

 hist, Atlanta, 91- F.A.A; Econ. Ass; Am. 

 Negro Acad. History and condition of the 

 American negro. The negro artisan; condition 

 of the negro. 



Dudley, Dr. Cha(rle)s B(enjamin), P. 0. Drawer 

 156, Altoona, Pa. * Chemistry, General tech- 

 nology. Oxford, N. Y, July 14, 42. A.B, Yale, 

 71, Ph.D, 74. Instr. physics, Pennsylvania, 74- 

 75; chemist, Pa. R. R. Co, 15- F.A.A. (sec'y, 

 D, 82) ; Chem. Soc. (pres, 96-97) ; Mech. Eng; 

 Min. Eng; Civil Eng; Soc. Testing Materials 

 (pres, 02, 04) ; Philos. Soc; Wash. Acad; Lon- 

 don Chem. Soc; Gt. Britain Iron and Steel 

 Inst; Chem. Gesell; Soc. chirn. de Paris. Wear 

 of steel rails; car lighting, heating, disinfection 

 and ventilation; methods for rapid examination 

 of commercial products. 



Dudley, Dr. P(limmon) H(enry), 80 Pine St, New 

 York, N. Y. Civil engineering, Metallurgy. 

 Freedom, O, May 21, 43. Western Reserve Ec- 

 lectic Inst. City engineer, Akron, O, 68-72; 

 chief engineer, Valley R. R. of Ohio, 72-75; 

 expert, Eastern Railroad Ass, 76-79 ; consulting 

 engineer tracks and rails, N. T. C. and H. R. R. 

 R. Co, 80- Reporter, Int. Railway Cong, Paris, 

 00; Washington, 05. Elliott Cresson gold 

 medal, 77; gold and silver medals, Chicago R. 

 R. Expos, 83; hon. Ph.D, Hiram, 97. Min. Eng; 

 Am. Acad; Forestry Ass; Eng. Club; fel. 

 N. Y. Acad, (pres, Sect. Physics and Astron.) ; 

 N. Y. Micros. Soc. ( pres. ) ; Int. Ass. Testing Ma- 

 terials; London Soc. Arts. Stability of railroad 

 tracks; the strains in rails and their distribu- 

 tion ; invented ' dynagraph ' and ' track indica- 

 tor ' ; designed first five-inch steel rail used in 

 United States, high carbon rails and six-inch 

 100 pound rails; decay of wood due to fungi. 

 The principles pertaining to American rail- 

 roads; metals for rails and tires for high speed 

 trains. 



Dudley, Prof. W(illia)m L(ofland), Vanderbilt 

 University, Nashville, Tenn. ^Chemistry. Cov- 

 ington, Ky, April 16, 59. B.S, Cincinnati, 80; 

 M.D, Miami Med. Col, 85. Prof. chem. and 

 toxicol, Miami Med. Col, 80-86; chem, Vander- 

 bilt, 86-, dean, Med. Dept, 95- Mem. Board of 

 Commissioners, Cincinnati Indust. Expos, 81- 

 85; director of affairs, Tenn. Centennial Expos, 

 97. Int. Cong. Arts and Science, St. Louis, 04 

 (sec'y, Sect. Inorg. Chem.). F.A.A. (sec'y, 

 C, 88, v. pres, 89) ; Chem. Soc. (pres, Cincinnati 

 Sect, and mem. Council, 98) ; Soc. Chem. Indust; 

 Electrochem. Soc; Min. Eng; Eng. Ass. of South 



(pres, 95) ; fel. London Chem. Soc; Chem. 

 Gesell. Inorganic chemistry. 



Dudley, Prof. William R(ussel), Stanford Uni- 

 versity, Cal. *Botany. Guilford, Conn, March 

 1, 49. B.S, Cornell, 74, M.S, 76; Strasburg and 

 Berlin, 87-88. Instr. lot, Cornell, 73-76, asst. 

 prof, 76-92; prof, Stanford, 93- Commissioner 

 and sec'y, Cal. Redwood Park Commission, 01- 

 05. F.A.A; Soc. Nat; Forestry Ass. (v. pres, 

 01-05); Cal. Acad, (ed, bot. papers, 97-00); 

 Sierra Club (assoc. ed, 'Bui,' 97-) ; Wash. Biol. 

 Soc; etc. Fungi of central New York; geo- 

 graphical distribution of plants of Cayuga Lake 

 Basin, New York, and Lackawanna and Wyoming 

 Basin, Pennsylvania; higher plants of Califor- 

 nia. Plants of central California, in relation 

 to distribution and descent; forests of Cali- 

 fornia. 



Duerden, Dr. J(ames) E(dwin), Rhodes Univer- 

 sity College, Grahamstown, Cape Colony, S. 

 Afr. *Biology. Burnley, England, April 7, 69. 

 Associate, Royal Col. of Science, London, 86-89; 

 London Univ, 87-89; Ph.D, Hopkins, 00, Bruce 

 fellow, 01-02. Demonstrator, Royal Col. Sci- 

 ence, Dublin, 89-94; curator, Mus, Inst, of 

 Jamaica, 95-01 ; acting prof, biol, North Caro- 

 lina, 02; acting asst. prof, zool, Michigan, 03- 

 05; prof, Rhodes Univ. Col, 05- Lecturer on 

 fisheries, Dublin; hon. curator invert, zool, Am. 

 Mus. Nat. Hist, N. Y, 02- F.A.A; Soc. Nat; 

 Soc. Zool; Mich. Acad. West Indian anthro- 

 pology and fisheries ; morphology of recent and 

 fossil corals; Actiniaria. Morphology of recent 

 and fossil corals; actinians and corals of Ja- 

 maica and the Hawaiian Islands. 



Duff, Prof. A(lexander) Wilmer, 2 Harvard Place, 

 Worcester, Mass. *Physics. St. John, N. B, 

 May 23, 64. A.B, New Brunswick, 84, and 

 London, 87; Berlin, 88; A.M, Edinburgh, 88, 

 B.S, 93, Sc.D, 01. Prof, physics, Madras, 

 India, 89-90; New Brunswick, 90-93; Purdue, 

 93-99; Worcester, 99- Physical Soc; fel. Am. 

 Acad; fel. Ind. Acad. Viscosity; acoustics; 

 tidal phenomena. Viscosity and rigidity of 

 liquids. 



Duggar, Prof. B(enjamin) M(inge), Columbia, Mo. 

 * Plant physiology and pathology. Gallion, 

 Ala, Sept. 1, 72. Alabama, 87-89; B.S, Miss. 

 Agr. and Mech. Col, 91; M.S, Ala. Polytech, 92; 

 A.B, Harvard, 94, A.M, 95; Ph.D, Cornell, 

 98; Germany and Italy, 99-00. Asst. director, 

 Agr. Exp. Sta, Uniontown, Ala, 92-93; asst. 

 bot, Radcliffe, 94-95 ; asst. botanist, State 

 Lab. Nat. Hist, Illinois, 95-96; instr. plant 

 physiol, Cornell, and asst. crypt, botanist, Agr. 

 Exp. Sta, 96-00, asst. prof, 00-01; physiologist, 

 Bur. Plant Indust, U. S. Dept. Agr, 01-02; 

 prof, hot, Missouri, 02- Int. Cong. Arts and 

 Science, St. Louis, 04 (speaker, plant physiol.). 

 F.A.A ; Bot. Soc ; Soc. Plant Morph. and Physiol ; 

 Mycol. Soc; Soc. Prom. Agr. Sci; Bot. Gesell. 

 Diseases of plants; plant physiology. Nutri- 

 tion and artificial culture of fleshy fungi; effect 

 of nutrition on resistance to toxic agents; na- 

 ture of varietal resistance to disease; diseases 



