AMEEICAX MEN OF SCIENCE 



407 



Lerap, Hermann, General Electric Co, Erie, Pa. 

 Electrical engineering. Switzerland, Aug. 8, 

 62. Electrician, Edison Lab, 81-82; elec. engi- 

 neer, Schuyler Elec. Light Co, 83-87; Thomson 

 H. Elec Co, 87-89; chief engineer, Thomson 

 Elec. Welding Co, 89-95; elec. engineer, Gen. 

 Elec. Co, Lynn, Mass, 95-11; Erie, Pa, 11-12, 

 works engineer, 12- Elec. Eng; A.W.S. Elec- 

 trical welding; oil engine design; incandescent 

 lamp, arc and dynamo manufacture. 



LendaU, Prof. H(arry) N(elson), Kutgers Col- 

 lege, New Brunswick, N. J. Municipal engineer- 

 ing. Essex, Mass, July 13, 78. B.S.(C.E), 

 Tufts. Practising engineer, 06-09; instr. civil 

 eng, Pennsylvania, 09-12; assoc. prof, Rutgers, 

 12- A.A; Eng. Educ; Ass. Prof; N. J. Sci. 

 Teachers Ass. Hydraulics. 



Leng, Charles William, Public Museum, Staten 

 Island, N, Y. Entomology. Staten Island, 

 April 6, 59. B.S, Brooklyn Polytech, 77. Pres, 

 John S. Leng's Son and Co, merchants, 88-19; 

 director, Pub. Museum, Staten Isl, 19- Re- 

 search assoc, Am. Museum Nat. Hist, 11-19; 

 Am. Museum Nat. Hist, expeditions to Labra- 

 dor, Newfoundland, Fla. and Cuba. A.A; fel. 

 Entom. Soc; N. Y. Entom. Soc. (pres, sec'y, 

 11-19) ; Staten Isl. Inst, (sec'y, 81-85, 17-19) ; 

 Brooklyn Entom. Soc. (curator) ; Wash. Entom. 

 Soc. Coleoptera; Rhynchophora of northeastern 

 America; Lampyridae of West Indies. 



Lengfeld, Dr. Felix, 1507 Gough St, San Fran- 

 cisco, Calif. ^Chemistry. San Francisco, Feb. 

 18, 63. Ph.G, California, 80, 84-86; Hopkins, 

 86-88, fellow, Ph.D, 88; Ziirich, Lifege and 

 Munich, 88-90, Prof, ehem, S. Dak. Sch. of 

 Mines, 90-91; instr, California, 91-92; decent, 

 instr. and asst. prof, Chicago, 92-01 ; consult- 

 ing flTwJ mfg. chemist, 01- A.A; Chem, Soc 

 Organic and inorganic chemistry. 



Lenher, Prof. Victor, 158 Summit Ave, Madison, 

 Wis. *Chemistry. Belmond, Iowa, July 13, 73. 

 Dickinson, 90; certificate in chem, Pennsylvania, 



93, Ph.D, 98. Asst. chem, California, 93-96; 

 Columbia, 98-00; asst. prof. gen. and theoret- 

 chem, Wisconsin, 00-04, assoc. prof, chem, 04- 

 07, prof, 07- Instr. chem, evening high sch, 

 N, Y. City, 99-00; mem, Nat. Research Coun- 

 cil (mem, sub-committee on selenium and tel- 

 lurium) ; major, on staff of Col, Bogert and 

 Major Gen. Siebert, C.W.S. A.A; Chem. Soc. 

 (past chairman, Wis. sect) ; Franklin Inst; 

 Wash. Acad; Wis. Acad. Inorganic chemistry; 

 rare elements; selenium; tellurium; rare earths; 

 geochemistry. 



Lennes, Prof. N(els) J(oharui), 1107 Gerald Ave, 

 Missoula, Mont. Mathematics. Norway, June 

 15, 74. B.S, Chicago, 98, M.S. 03, Ph.D, 07. 

 Instr. math, Mass. Inst. Tech, 07-10; Columbia, 

 10-13; prof, and head of dept, Montana, 13- 

 Head of math, dept, Chautauqua, 08-13. Math. 

 Soe. Analysis situs; foundations of mathemat- 

 ics; projective geometry; mathematical educa- 

 tion. 



Lenox, Prof. L(ionel) R(emond), Stanford Uni- 

 versity, Calif. Chemistry. Brooklyn, N. Y, 

 March 8, 65, Ph.B, Columbia, 88. Instr. chem, 

 Lehigh, 88-91; Stanford, 92-93, asst, prof, 93- 



94, assoc. prof, anal, chem, 94-96, prof, 96- 



Chemist, bur. ordnance, U, S, N, 91-92. Chem. 

 Soc, 



Leonard, Prof, A(rthur) G(ray), University of 

 North Dakota, Grank Forks, N, Dak, Geology. 

 Clinton, N, Y, March 15, 65, A.B, Oberlin, 89, 

 A.M, 95; Ph.D, Hopkins, 98. Prof. geol. and 

 biol. Western, 94-96; asst. state geologist, Iowa 

 Geol. Surv, 96-97; asst. prof, geol, Missouri, 

 99-00; asst. state geologist, Iowa Geol. Surv, 

 00-03 ; prof, geol. North Dakota, and state geol- 

 ogist, 03- Field asst, U. S. Geol. Surv, 05-07. 

 A.A; Geol. Soc; Iowa Acad. Coal fields of 

 North Dakota and Montana; Cretaceous and 

 Tertiary formations of Montana and North Da- 

 kota; glacial deposits and Pleistocene drainage 

 in North Dakota. 



Leonard, Prof. F(red) E(ugene), 174 E. College 

 St, Oberlin, Ohio. Plu^sical education. Dar- 

 lington, Wis, June 2, 66. A.B, Oberlin, 89, 

 A.M, 92; M.D, Columbia, 92; student, summer 

 schools physical training, Springfield, 88; 

 Chautauqua, 92 ; Baron Posse, 93 ; Harvard, 94, 

 98; hon. grad, Sargent Nor, Sch. Physical Educ, 

 07 ; Stockholm and Berlin, 00-01. Prof, hygiene 

 and physical educ. and director men's gymna- 

 sium, Oberlin, 92- Special lecturer. Harvard 

 Summer Sch, 99, 02, 08-19; Columbia, summer, 

 07; special instr, Y. M. C. A. Col, Chicago, 03, 

 05, 07, 09. Physical Educ. Ass; Soc, Directors 

 Physical Educ, Colleges (v, pres, 10, pres, 12) ; 

 Cleveland Acad, Med, History and theory of 

 physical education, 



Leonard, Dr. Heman Burr, University of Arizona, 

 Tucson, Ariz, Mathematics. Detroit, Mich, 

 Aug. 22, 72. B.S, Michigan, 95; Ph.D, Colo- 

 rado, 06. Prof, math, Wesleyan (111), 01-03; 

 instr, Oregon, 06-09, asst. prof, 09-12, prof. 12- 

 14; Arizona, 15- A.A; Math. Soc; Eng. Educ; 

 Ass. Prof. Linear associative algebra ; the 

 definition of reducibility and the factoring of 

 composite hypercomples number systems; prop- 

 erties of the characteristic equations of hyper- 

 complex number systems. 



Leonian, Prof. Leon H(atchig), State College, N, 

 Mex. Plant pathology. Van, Armenia, Feb. 

 27, 88. B.S, Kentucky, 16; M.S, Michigan, 17. 

 Asst. research horticulturist, S. C. Exp. Sta, 

 17-18; asst. prof. tot. and plant pathologist, 

 N. Mex. Col, IS- Field asst, plant disease surv, 

 U. S. Dept. Agr, summer, 18. A.A; Bot. Soc; 

 Phytopath. Soc. Plant breeding. 



Leroy, Dr. Louis, Exchange Building, Memphis, 

 Tenn. Medicine. Chelsea, Mass, Sept. 15, 74. 

 M.D, Medico-Chirurg. Col, Phila, 96; B.S, Nash- 

 ville, 00. Prof. path, and bacter, Vanderbilt, 

 96-06; theory and practice of med, Tennessee, 

 06- State bacteriologist, Tenn, 96-10; city bac- 

 teriologist, Nashville, 00-04; lecturer path, Har- 

 vey Med. Col. and med. dept, Illinois, 00-02; 

 pathologist, Nashville City Hosp, 00 ; pres, Tenn. 

 State Board Health, 10-11. Am. Med. Ass. 

 Pathology; bacteriology; smallpox; tuberculo- 

 sis; pellagra; hookworm; meningitis; malaria. 



Leslie, Prof. E(ugene) H(endricks), University 

 of Michigan, Ann Arbor, Mich, Chemical en- 

 gineering. Ottawa, 111, Aug, 28, 92, B,S, Illi- 

 nois, 13 ; Ph.D, Columbia, 16. Chief chemist. 

 Gen. Petrol. Corp, 16-18; asst. to pres. U. S. 

 Indust. Alcohol Co, 18-20; assoc. prof. chem. 



