188 



AMERICAN MEN OF SCIENCE 



Lee, Prof. Willis T(homas), U. S. Geological Sur- 

 vey, Washington, D. C. Geology. Brooklyn, 

 Pa, Dec. 24, 64. Ph.B, Wesleyan, 94, B.S, 98; 

 fellow, Chicago, 98-00. Instr. science, R. I. Col'. 

 Agr, 94-95; prof. geol. and biol, Denver, 95- 

 98; principal, High Sch, Trinidad, Colo, 00-02; 

 asst. geologist, V. S. Geol. Surv, 02- F.A.A; 

 Geol. Soc. Geology. Stratigraphic problems 

 of the southwestern part of the United States 

 and their application to ground waters. 



Leeds, Morris E(vans), 3221 N. 17th St, Phila- 

 delphia, Pa. Physics. Philadelphia, March 6, 

 69. A.B, Haverford, 88; Berlin, 92-93. 

 With Queen and Co, Philadelphia, 89-99; Mor- 

 ris E. Leeds and Co, 99-03; pres, The Leeds 

 and Northrup Co, 03- M.A.A; Physical Soc; 

 Elec. Eng; Franklin Inst; Phila. Photog. Soc. 



Lefavour, Dr. Henry, Simmons College, Boston, 

 Mass. *Physics, Education. Salem, Mass, 

 Sept. 4, 62. A.B, Williams, 83, Ph.D, 86; Ber- 

 lin, 88-90. Instr, Williston Sem, 83-84; phys- 

 ics and math, Williams, 84-88, prof, physics, 

 88-02, dean, 97-02; pres, Simmons (Mass.), 

 02- LL.D, Williams, 02; Tufts, 05. F.AA; 

 Physical Soc; fel. Am. Acad. Astronomy; 

 chemical physics. 



Lefevre, Prof. Albert, University of Virginia, 

 Charlottesville, Va. Philosophy. Baltimore, 

 Md, Oct. 4, 73. A.B, Texas, 94; Hopkins, 94- 

 95; Cornell, 95-98, fellow, 97-98, Ph.D, 98; 

 Berlin, 99-00. Lecturer philos, Cornell, 98-99, 

 instr, 00-02, asst. prof, 02-03; prof, Tulane, 

 03-05 ; Virginia, 05- Asst. to editors, ' Philos. 

 Rev,' 98-99. LL.D, South Carolina. Philos. 

 Ass; S. Soc. Philos. and Psychol. The ethical 

 system of Bishop Butler; the relation between 

 epistemology and ethical method. The episte- 

 mologieal bases of ethical theories. 



Lefevre, Prof. George, Columbia, Mo. *Zoology. 

 Baltimore, Md, Sept. 16, 69. A.B, Hopkins, 91, 

 fellow, 94-97, Ph.D, 96. Asst. zool, Hopkins, 

 97-98; prof, Missouri, 99- Instr. zool, Woods 

 Hole, 98-00. Soc. Nat; Soc. Zool; St. Louis 

 Acad; Boston Soc. Nat. Hist. Bud develop- 

 ment, embryology and anatomy of Tunicata; 

 regeneration and grafting in Cordylophora ; 

 artificial parthenogenesis in Thalassema. 

 Artificial parthenogenesis; artificial propagation 

 of fresh-water mussels; bud development of 

 Bryozoa. 



Leffmann, Dr. Henry, 119 S. Fourth St, Phila- 

 delphia, Pa. *Chemisfry. Philadelphia, Sept. 

 9, 47. A.M, Central High Sch, Phila, 65; M.D, 

 Jefferson Med. Col, 69. Prof, chem. Pa. Col. 

 Dental Surg, 84-99; 'Woman's Col. of Pa, 88- ; 

 Wagner Free Inst, 88- Port physician, Phila, 

 84-87, 91-92. Hon. Ph.D, Wagner Free Inst, 

 74. Chem. Soc; Franklin Inst; British Soc. 

 Pub. Analysts. 



Legras, Prof. Gustave, 17 Lexington Ave, New 

 York, N. Y. Mathematics. New York, Jan. 

 24, 58. B.S, Col. City of N. Y, 79, M.S, 96. 

 Tutor and instr. math, Col. City of N. Y, 81- 

 97, asst. prof, 97- M.A.A; Math. Soc; Social 

 Sci. Ass ; Acad. Polit. and Social Sci. Theory of 



algebraic equations; evolution and philosophy 

 of infinitesimal calculus. History and teaching 

 of mathematics. 



Lehman, A(mbrose) E(dwin), 208 S. 43d St, 

 Philadelphia, Pa. Geology, Topography, Min- 

 ing. Lebanon, Pa, May 23, 51. Pub. sch. and 

 private instruction. Geol. engineer and asst, 

 geologist, Pa. Geol. Surv, 74-86; asst. chief and 

 chief engineer, various railroads, 82-89 ; consult- 

 ing engineer, 89- Mem. Board Civil Service 

 Examiners, Dept. Munic. Eng, Phila. Philos. 

 Soc; Phila. Eng. Club. 



Lehmann, Prof. G(ustav) W(illiam), City Hall 

 Annex, Baltimore, Md. Chemistry, Metallurgy, 

 Bacteriology. Wiesbaden, Germany, Aug. 20, 

 44. Polytech, Wiesbaden. Chemist, U. S. 

 Govt, 78-; chief chemist, Board of Health, 

 Baltimore, 96- Mining engineer and metal- 

 lurgist of several mines; expert for fertilizer 

 works; chief chemist and metallurgist, Bal- 

 timore Copper Smelting and Rolling Co, 66- 

 92; gen. manager, various companies, 70- 

 F.A.A; Chem. Soc; Min. Eng; Pub. Health 

 Ass; Ass. Off. Agr. Chemists; Wash. Chem. 

 Soc; Md. Health Ass. Introduction of electro- 

 lytic assay of copper into the United States; 

 experiments on electrolytic deposition of cop- 

 per on commercial scale with a Siemens 

 dynamo. Chemistry and bacteriology of food 

 products, milk and water. 



Lehmer, Dr. D(errick) N(orman), 2736 Regent 

 St, Berkeley, Cal. Mathematics. Somerset, 

 Ind, July 27, 67. A.B, Nebraska, 93, A.M, 96 ; 

 Ph.D, Chicago, 00. Head master, Worthinjjton 

 Mil. Acad, 96-97 ; instr. math, California, 00-04, 

 asst. prof, O.'i- Math. Soc. Theory of numbers ; 

 synthetic geometry. Construction of table of 

 smallest divisions of all numbers less than ten 

 millions by new method. 



Lehnerts, Prof. Edward M, 456 E. Sanborn St. 

 Winona, Minn. Geography. Winona, March 

 29, 73. B.S, Pennsylvania, 02. Instr. geog, 

 State Nor. Sch, Winona, Minn, 96-98, prof, 98- 

 Director, Am. Bur. Geog, 00-02 ; ed, ' Jour. 

 Geog,' 02-05. Nat. Educ. Ass. Physical geog- 

 raphy; commercial geography; the teaching of 

 geography. Physical and economic geography 

 of the driftless area of the upper Mississippi 

 Valley. 



Leidy, Dr. Joseph, Jr, 1319 Locust St, Philadel- 

 phia, Pa. Medicine. Philadelphia, April 11, 

 66. A.B, Phila. High Sch, 84, A.M, 89; M.D, 

 Pennsylvania, 87. Asst. demonstrator path, 

 histol. and morbid anat, Pennsylvania, 88, anat, 

 90. Physician to various hospitals, Phila. 

 Officier de l'Instruction Pub, 00. Mem. Jury of 

 Awards (Hygiene), and official delegate to Int. 

 Cong. Hygiene, Paris Expos, 00. M.A.A; Ass. 

 Anat; Phila. Acad; Phila. Col. Physicians. 

 Pathology; general medicine; public hygiene. 



Leighton, Prof. J(oseph) A(lexander), Geneva, 

 N. Y. Psychology, Philosophy. Orangeville, Ont, 

 Dec. 2, 70. A.B, Trinitv (Can.), 91; Ph.D, 

 Cornell, 94; B.D, Episcopal Theol. Sch, 96; 

 Tubingen, Berlin and Erlangen, 96-97. Ex- 



