AMERICAN MEN OF SCIENCE 



405 



and other rodents; the placentation and mor- 

 phology of Citellus, Geomys, Dipodomys and 

 other mammals. 



Lee, Prof. W(illis) T(honias), U. S. Geological 

 Survey, Washington, D. C. *Geology. Brooklyn, 

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

 fellow, Chicago, 98-00; Hopkins, 02, Ph.D, 13. 

 Instr. science, R. I. Col, 94-95; prof. geol. and 

 biol, Denver, 95-98; principal, high sch, Trini- 

 dad, Colo, QQ-Qlf geologist, U. S. Geol. Surv, 

 02-; head, dept. geol. and director, seh. eng. 

 geol, Oklahoma, 19-20; lecturer geol, Yale, 20- 

 A.A; Geol. Soc; Paleont. Soc; Wash. Acad; 

 Wash. Geol. Soc. Stratigraphy in southwestern 

 United States applied to ground water investiga- 

 tions; coal deposits in Colorado and New Mex- 

 ico; stratigraphy in the Rocky Mountain region; 

 interpretative geology and geography of travel 

 routes and national parks. 



Leech, Dr. Paul Nicholas, American Medical As- 

 sociation, 535 N. Dearborn St, Chicago, 111. 

 Chemistry. Oxford, Ohio, Aug. 12, 89. A.B, 

 Miami, 10; M.S, Chicago, 11, Ph.D, 13. Re- 

 search asst, Chicago, 11-13; chemist, Am. Med. 

 Ass, 13- Chem. Soc. Formic acid; triaryl- 

 methylhydroxylamins ; medicaments. 



Leeds, Morris E(vans), 4901 Stenton Ave, Phila- 

 delphia, Pa. Physics. Philadelphia, March 6, 

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

 Queen and Co, Philadelphia, 89-99; Morris E. 

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

 Northrup Co, 08- A.A; Physical Soc; Elec. 

 Eng; Franklin Inst; Phila. Acad. Electrical 

 and heat measuring apparatus. 



Lees, Dr. James H(enry), State House, Des 

 Moines, Iowa. Geology. Yorkshire, England, 

 July 26, 75. A.B, Coe, 01; fellow, Iowa, 02-03, 

 M.S, 03; fellow, Chicago, 03-04, Ph.D, 15. Asst. 

 geol, Chicago, 04-06; asst. state geologist, Iowa 

 Geol. Surv, 06- Instr. geol, Colorado, summer, 

 04; Chicago, 05. A.A; Geol. Soc; Iowa Acad, 

 (sec'y, 14-) Vertebrate paleontology'; physi- 

 ography of Iowa; Des Moines stage of the Penn- 

 sylvanian; Pleistocene of Iowa. 



Lefavour, Dr. Henry, Simmons College, Boston, 

 Mass. *Physics, Education. Salem, Mass, Sept. 

 4, 62. A.B, Williams, 83, Ph.D, 86, LL.D, 02; 

 Berlin, 88-90; LL.D, Tufts, 05. Instr, Wil- 

 liston Sem, 83-84; physics and math, Williams, 

 84-88, prof, physics, 88-02, dean, 97-02; pres, 

 Simmons (Mass), 02- A.A; Am. Aead. As- 

 tronomy; chemical physics. 



Lefevre, Prof. George, University of Missouri, 

 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, mem. staff 

 of investigation, 06-, trustee, 09-, sec'y, 13-; 

 temporary asst, U. S. Bur. Fisheries, 07-11 ; ed, 

 'Univ. of Mo. Studies,' 10- A.A; Soc. Nat; 

 Soc. Zool. Bud development, embryology and 

 anatomy of Tunicata ; regeneration and grafting 

 in Cordylophora ; artificial parthenogenesis in 

 Thalassema: chromosomes; artificial propaga- 

 tion of fresh-water mussels; poultry breeding. 



Leffmann, Dr. Henry, 1839 N. 17th St, Philadel- 

 phia, Pa. *Chemistry. Philadelphia, Sept. 9, 

 47. A.M. Cent. High Sch, Phila, 65; M.D, 

 Jefferson Med. Col, 69; hon. Ph.D, Wagner Free 



Inst, 74 ; D.D.S, Pa. Col. Dental Surg, 84. Prof, 

 chem, Wagner Free Inst, 75-; Pa. Col. Dental 

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

 Port physician, Phila, 84-87, 91-92. Chem. Soc; 

 Franklin Inst; British Soc. Pub. Analysts. Food 

 chemistry. 



Lefschetz, Prof. S(olomon), 937 Missouri 8t, 

 Lawrence, Kans. *Mathematics. Moscow, Rus- 

 sia, Sept. 3, 84. M.E, Ecole Centrale, Paris, 05 ; 

 Ph.D, Clark, 11. With Westinghouse Elec. and 

 Mfg. Co, 07-11; instr. math, Nebraska, 11-13; 

 Kaiisas, 13-16, asst. prof, 16-20, assoc. prof, 

 20- Bordin prize, French Acad, 19. Math. 

 Soc; Math. Ass; Soc. Math, de France; Circolo 

 Mat. di Palermo. Topology of plane curves; 

 algebraic geometry; multiple integrals attached 

 to an algebraic manifold; Abelian manifolds; 

 automorphic functions. 



Lehenbauer, Prof. P(liilip) A(ugustus), Univer- 

 sity of Illinois, Urbana, 111. Plant physiology. 

 Hannibal, Mo, Nov. 1, 83. A.B, Westminster 

 (Mo), 07; A.M, James Millikin, 09; Ph.D, INi- 

 nois, 14. Asst. prof. bot. and hort, Nevada, 14r- 

 16, assoc. prof, 16-17; plant physiol, Illinois, 

 17-18, asst. prof, 18- A.A; Bot. Soc; Phv^to- 

 path. Soc; Soc. Hort.^Sci; Pomol. Soc. Gro^vth 

 of plants in relation to temperature and hu- 

 midity. 



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



St, Berkeley, Calif. ^Mathematics. Somerset, 

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

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

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

 04, asst. prof, 04-10, assoc. prof, 10-18, prof, 

 18- A.A; Math. Soc; Math. Ass; Circolo Mat. 

 di Palermo. Theory of numbers; synthetic 

 geometry; construction of table of smallest di- 

 visors of all numbers less than ten millions by 

 new method. 



Lehnerts, Edward M, Hunter College, New York, 

 N. Y. Geography, Geology. Winona, Minn, 

 March 29, 73. B.S, Pennsylvania, 02; A.M, 

 Minnesota, 08. Instr. geog. State Nor. Sch, 

 Winona, Minn, 96-98, prof, 98-07; asst. prof, 

 geog. and geol, Minnesota, 07-18 ; lecturer geog. 

 Teachers College, Columbia, 18-21 ; assoc. prof, 

 geol, Hunter, 21- Director, Am. Bur. Geog, 00- 

 02; ed, 'Jour. Geog,' 02-05. Physical geogra- 

 phy; commercial geography; the teaching of 

 geography; physical and economic geography of 

 the upper Mississippi Valley. 



Leib, Prof. D(avid) D(eitch), 358 Mohegan Ave, 

 New London, Conn. Mathematics. Allen, Pa, 

 Oct. 28, 79. A.B, Dickinson, 03, A.M, 05; fel- 

 low, Hopkins, 08-09, Ph.D, 09. Instr. math, 

 Pennington Sem. (N. J), 03-06; Sheffield Sci. 

 Sch, Yale, 09-16; prof, Conn. Col. for Women, 

 16- A.A; Math. Soc; Math. Ass. Geometry; 

 invariants ; statistics. 



Leidy, Dr. Joseph, 1319 Locust St, Philadelphia, 

 Pa. Bacteriology. A.B, Pennsylvania, A.M, 

 M.D, 87. Asst. demonstrator path, histol. and 

 morbid anat, Pennsylvania, 88, anat, 90. Physi- 

 cian, Pa. Hosp, 87-89; A-arious hospitals, Phila: 

 mem. jury of awards (hygiene) and official 

 delegate. First Int.. Cong. Hygiene, Paris. 00; 

 officier de I'lnstruction Pub, 00; major, M.R.C. 

 A.A; Soc. Bact; Ass. ^^nat; Phila. Col. Phvsi- 



