AMERICAN MEN OF SCIENCE 



85 



Derr, Dr. Homer M(unro), Thomas S. Clarkson 

 Memorial School of Technology, Potsdam, 

 N. Y. Physics, Geology. Turbotville, Pa, Feb. 

 5, 72. A.B, Stanford, 98; A.M, Columbia, 

 01; Tyndale fellow, Pennsylvania, 01-03, Ph.D, 

 03. Asst. physics, Columbia, 99-01 ; instr. 

 geol. and mining, Wyoming, 01-02; supt, Santa 

 Margarita Gold Mining Co, Colombia, S. A, 

 03-04; prof, physics and geol, Epworth, 04-05; 

 math, and civil eng, Thomas S. Clarkson Mem. 

 Sch. Tech, 05- Instr. math, Palo Alto Summer 

 Sch, 98. Geol. Soc; Min. Eng. Petrographic 

 analysis. Siliceous oolites of Sweetwater 

 County, Wyoming. 



Derr, Prof. Louis, 83 Center St, Brookline, Mass. 

 Physics, Electrical engineering. Pottsville, Pa, 

 Aug. 6, 68. A.B, Amherst, 89, A.M, 92; B.S, 

 Mass. Inst. Tech, 92. Asst. physics, Mass. hist. 

 Tech, 92-93, instr, 93-01, asst. prof, 01-04, 

 assoc. prof, 0-'f- Instr. physics, Boston Univ, 

 and Boston Nor. Sch. of Gymnastics, 95- Ex- 

 perimental physics. 



Dewey, Dr. D(avis) R(ich), Massachusetts Insti- 

 tute of Technology, Boston, Mass. Economics, 

 Statistics. Burlington, Vt, April 7, 58. A.B, 

 Vermont, 79; Ph.D, Hopkins, 86. Teacher, 

 Underhill, Vt, 79-81; principal, Hyde Park 

 High Sch, Chicago, 81-83; asst. prof. econ. and 

 statist, Mass. Inst. Tech, 86-92, prof, 93- 

 Chairman, Mass. Special Commission on the 

 Unemployed, 94; Commission on Charitable and 

 Reformatory Interests and Institutions of Mass, 

 96; Board of Munic. Statist, of Boston, 97; 

 expert agent, wage statist, for the Twelfth 

 Census, 02. Econ. Ass. (mem. Pub. Commit- 

 tee) ; Statist. Ass. (ed. and sec'y, 86-) ; LTnst. 

 Int. Statist. Finance, labor, banking and sta- 

 tistics. 



Dewey, Frederic P(erkins), Lanier Heights, Wash- 

 ington, D. C. Chemistry, Metallurgy. Hart- 

 ford, Conn, Oct. 4, 55. Ph.B, Yale, 76. Instr. 

 chem, Lafayette, 76-77; curator econ. geol. and 

 metal, TJ. S. Nat. Mus, 82-89 ; chemist, building 

 stones. Tenth Census, 81 ; mineralogist, TJ. S. 

 Geol. Surv, 82; assayer, Bur. of the Mint, TJ. 8. 

 Treas. Dept. Chem. Soc; Min. Eng; Soc. Chem. 

 Indust; Electrochem. Soc; Wash. Chem. Soc. 

 ( pres, 93 ) . Analytical chemistry and its ap- 

 plication to metallurgy. 



Dewey, Prof. John, Columbia University, New 

 York, N. Y. *Philosophy. Burlington, Vt, 

 Oct. 20, 59. A.B, Vermont, 79; Ph.D, Hopkins, 

 84. Instr. and asst. prof, philos, Michigan, 

 84-88; prof, Minnesota, 88-89; Michigan, 89- 

 94; Chicago, 94-04, director, Sch. of Educ, 

 02-04; prof, philos, Columbia, 0^- LL.D, Wis- 

 consin, 04. Soc. Nat; Psychol. Ass. (pres, 99) ; 

 Philos. Ass. ( pres, 05 ) . Logical theory ; social 

 psychology; ethical history; history of moral 

 beliefs and practises of humanity. 



Dewey, Lyster H(oxie), 1337 Wallach Place, N. W, 

 Washington, D. C. *Botany. Cambridge, Mich, 

 March 14, 65. A.B, Mich. Agr. Col, 88. Instr. 

 bot, Mich. Agr. Col, 88-90; asst. botanist, TJ. 

 S. Dept. Agr, 90- F.A.A; Nat. Geog. Soc; 



Wash. Bot. Soc; Wash. Biol. Soc. Grasses; 

 weeds troublesome to agriculture ; fiber plants ; 

 origin and classification of varieties of cot- 

 ton; production of fiber from hemp, flax, sisal 

 and manila plants. 



DeWitt, Dr. Lydia M, 925 N. University Ave, 

 Ann Arbor, Mich. * Anatomy. Flint, Mich, 

 Feb. 1, 59. M.D, Michigan, 98, B.S, 99. Dem- 

 onstrator anat, Michigan, 96-97, asst. histol, 

 98-02, instr, 02- Ass. Anat; Am. Med. Ass; 

 Mich. Med. Soc; Washtenaw Co. (Mich.) Med. 

 Soc; Woman's Research Club (pres.). Nerve 

 endings in muscle, tendon and esophagus; 

 morphology kidneys. Morphology and function 

 of areas of Langerhans. 



Dexter, Prof. Edwin G(rant), 903 W. Green St, 

 Urbana, Ills. Psychology, Education. Calais, 

 Me, July 21, 68. B.P, Brown, 91, A.M, 92; 

 Ph.D, Columbia, 99. Science master, High Sch, 

 Colo. Springs, 92-95; prof, psychol, Colo. State 

 Nor. Sch, 95-00; educ, Illinois, 00-, director, 

 Sch. Educ, 05- F.A.A; Psychol. Ass; Nat. 

 Educ. Ass. (pres, Child-study Sect.) ; Soc. Sci. 

 Educ; Am. Geog. Soc; Ills. Child-study Soc. 

 The influence of the weather on conduct; his- 

 tory of education in the United States. 



Dexter, Prof. Franklin, 148 Marlborough St, Bos- 

 ton, Mass. * Anatomy. Boston, May 10, 57. 

 M.D, Columbia, 87. Asst. demonstrator anat, 

 Columbia, 92-93; asst. histol, Harvard Med. 

 Sch, 93-94, demonstrator anat, 94-95, asst. 

 prof, 96-99, assoc. prof, 00- F.A.A; Ass. Anat; 

 Mass. Med. Soc. Medulla of the rabbit; abdo- 

 men, vitelline vein and brain of the cat. Para- 

 physis of Mammalia. 



Dickson, Dr. Charles W(illiam), 179 Alfred St, 

 Kingston, Ont, Can. Chemistry, Geology. 

 Hamilton, Ont, Jan. 13, 78. A.M, Queen's 

 (Can.), 96-00, Sch. Mining, 00-01; science 

 research scholar, Royal Exhib. of 1851, London, 

 England, 01, 02, 03; Ph.D, Columbia, 03; 

 Heidelberg and Freiburg, 03-04. Demonstrator 

 anal, chem, Queen's (Can.), 01-02, lecturer 

 chem, Sch. Mining, 03- Chemist, Assay Office, 

 Ont. Bur. Mines, 00; Dominion Iron and Steel 

 Co, Sidney, N. S, 01. Min, Eng; Can. Min. 

 Inst. Genetic relations of ore deposits; ore 

 deposits of Sudbury, Ont. Platinum contents 

 of nickel and copper ores. 



Dickson, Prof. L(eonard) E(ugene), Box 142, Uni- 

 versity of Chicago, Chicago, Ills. *Mathemat- 

 ics. Independence, la, Jan. 22, 74. B.S, Texas, 

 93, teaching fellow, 93-94, A.M, 94; fellow, 

 Chicago, 94-96, Ph.D, 96; Leipzig and Paris, 

 96-97. Chemist, Tex. Geol. Surv, 92-93; instr. 

 math, California, 97-99; assoc. prof, Texas, 99- 

 00; asst. prof, Chicago, 00- Ed, 'Am. Math. 

 Monthly.' Math. Soc. (assoc. ed, 'Trans.'); 

 London Math. Soc. Theory of groups (finite 

 and infinite) ; theory of numbers; projective 

 geometry; applications of group theory. The 

 theory of groups in a general field. 



Diefendorf, Dr. A(llen) Ross, 68 Crescent St, Mid- 

 diet own, Conn. Psychiatry. Savannah, N. Y, 

 Dec. 21, 71. A.B, Yale, 94, M.D, 96. Junior 



