402 



AMERICAN MEN OF SCIENCE 



09-13, assoc. prof. clce. eng, Syracuse, 13-18; 

 uith "Willard Storage Battery Co, 16-20; Van 

 Wheel Corp, 20- Assoc, mem. Physical Soc; 

 Eng. Educ. Light. 



Lay, Dr. Wilfrid, Flushing High School, Flush- 

 ing, N. Y. Psychology. Brooklyn, N. Y, Jan. 

 3, 72. A.B, Columbia, 93, Ph.D, 98. Instr. 

 Latin and English, DeWitt Clinton High Sch, 

 99-06; Flushing High Sch, 06- Instr. logic and 

 psychol, N. Y. Training Sch. for Teachers, 04- 

 05. Mental imagery; psychoanalysis; the un- 

 conscious. 



Layng, Dr. Thomas Ernest, University of Illinois, 

 Urbana, 111. Chemistry. Smith Falls, Can, 86. 

 M.A, McMaster, 12; Ph.D, Illinois, 15. Chief 

 chemist, Am. Tar Products Co, 15-16; research 

 chemist. Am. Creosote Co, 16-19 ; asst. prof, ap- 

 plied chem, Illinois, 18- Organic chemistry; 

 carbonization of coal; hydrogenation of oils; 

 pitch resins. 



Leach, Prof. J(uliaii) G(ilbert), 721 Remington 

 St, Ft. Collins, Colo. Botany. Somerville, Tenn, 

 Nov. 16, 94. B.S, Tennessee, 17; Shevlin fel- 

 lo-w, Minnesota, 17-18, M.S, 18. Agent, U. S. 

 Dept. Agr, 16-17; asst. plant path, Minnesota, 

 18-19; acting head, hot. dept. Colo. Agr. Col. 19- 

 Bot. Soc; Phytopath. Soc. Plant pathology. 



Leach, Dr. Mary F (ranees), Western College, Ox- 

 ford, Ohio. Chemistry. Payson, 111, March 22, 

 58. Mt. Holyoke, 80; B.S, Michigan, 93, fel- 

 low, 01-04, Ph.D, 03; Gottingen, 97-98; Ziirich, 

 98-00. Teacher, pub. schools, Mass. and Mo, 

 78-79, 81-85; high sch, Sedalia, Mo, 85-89; 

 Detroit, 89-91; prof, chem, Mt. Holyoke, 93-00; 

 asst. hygiene, Michigan, 06-07; prof. chem. and 

 hygiene. Western Col. for Women, 07- A.A; 

 Chem. Soc. Chemistry of Bacillus coli com- 

 munis ; sensitizing portion of egg-white. 



Learn, Prof. C(larence) D(elbert), Agricultural 

 and Mechanical College, Stillwater, Okla. Bot- 

 any. Clermont, Iowa, Sept. 30, 75. B.S, Upper 

 Iowa, 09; Mo. Bot. Garden, 09-10; A.M, Cor- 

 nell, 12. Teaching fellow bot, Washington (St. 

 Louis), 09-10; asst, Cornell, 10-12; instr, Olcla. 

 Col, 12, asst. prof, 15- Asst, bot. lab, Purdue 

 Exp. Sta, summer, 10. Bot. Soc; fel. Iowa 

 Acad. Mycology; plant diseases. 



Leary, Dr. Timothy, Jamaica Plain, Mass. Pa- 

 thology, Bacteriology. Waltham, Mass, 70. 

 M.D,'^ Harvard, 95; hon. A.M, Tufts, 07. First 

 res. asst. pathologist, Boston City Hosp, 95-97 ; 

 asst. prof. path, and iacter. Tufts, 97-00, prof, 

 00- Assoc. Died, examiner, Suffolk Co, Mass, 

 08. Ass. Path, and Bact; Am. Med. Ass; Mass. 

 Medico-Logal Soc; Boston Soc. ^Mod. Sci; Bos- 

 ton Med. Library Ass. Etiology of cancer; re- 

 generation and process of repair; vaccine ther- 

 apy; scrum therapy; pernicious anemia. 



Leathers, Prof. A(delbert) L(lewellyn), Fargo, 

 N. Dak. Zoology. Ph.B, Weslcyan. 07; Michi- 

 gan, 07-08; fellow, Clark, 11-12; Ph.D, Cornell, 

 16. Asst. biol, Michigan, 07-08; prof, Leander 

 Clark, 09-10; instr. Northwestern, 13-15; prof. 

 Olivet, 16-18; assoc. prof, sool, N. Dak. Col, 18- 

 A.A; Ecol. Soc; N. Dak. Acad. Entomology; 

 fishes. 



Leavenworth, Prof. F(rancis) P, University of 

 Minnesota, Minneapolis, Minn. Astronomy. 



Mt. Vernon, Ind, Sept. 3, 58. A.B, Indiana, 

 80, A.M, 87; Cincinnati Observatory, 80-82. 

 Asst, Cincinnati Observatory, 80-20; observa- 

 tory, Virginia, 82-87; director, observatory, 

 Haverford, 87-92; asst. prof, astron, Minnesota, 

 92-97, prof, 97- Astron. Soc. Double star 

 measurements; discovery of nebulae; stellar 

 parallax; astronomical photography; position of 

 Eros; parallax of sun from photographic plates 

 of Eros; photographic measurements on ring 

 nebula of Lyra. 



Leavenworth, Prof. William Stowell, Jacksonville, 

 111. Chemistry. Brattleboro, Vt, July 28, 62. B.S, 

 Hamilton, 89, M.S, 92; Harvard, summers, 89, 

 90; Chicago, summers, 99, 01. Asst. chem, Ham- 

 ilton, 88-89; prof. chem. and physics, Eipon, 

 89-03; chem. Olivet, 03-18; Maryville, 18-19; 

 III. Col, 19- Acting principal, State Nor. Sch, 

 Castleton, Vt, 92. A.A; Chem. Soc. The marble 

 region of New England; a method of analyzing 

 the inorganic acids; some derivatives of wood 

 tar; methods of sewage disposal; new Tennessee 

 phosphate deposit. 



Leavitt, Clyde, Commission of Conservation of 

 Canada, Ottawa, Can. Forestry. Elk Rapids, 

 Mich, March 1, 78. A.B, Michigan, 01, M.S.F, 

 04. With U. S. Forest Service, 04-12; chief 

 forester. Commission of Conservation of Can, 

 12- Soc. Foresters; Phytopath. Soc; Can. Soc. 

 Forest Eng. (pres, 16, sec'y, 18-). Forest pro- 

 tection and conservation. 



Leavitt, Miss Henrietta S(wan), Harvard College 



Observatory, Cambridge, Mass. Astronomy. 

 Lanca.ster, Mass. A.B, Eadcliffe, 9B. Photo- 

 graphic researches, Harvard Col. Observatory, 

 95-96, 02- A.A; Astron. Soc. 1777 variables in 

 the Magellanic clouds; discovery of eight vari- 

 able stars in nebulous regions ; standard scale of 

 photographic magnitudes; distribution, periods 

 and light curves of variable stars. 



Leavitt, Dr. K (chert) G(reenleaf), State Normal 

 School. Trenton, N. J. Botany. North Parson- 

 field, Maine, Sept. 28, 65. A.B, Harvard, 89, 

 A.M, 98, Ph.D, 04. Science master, de Veaux 

 Sch, N. Y, 90-91 ; head master. Concord Home 

 Sch, Mass, 91-93 ; teacher physics, Williston 

 Sem, Mass, 93-97; asst. bot, Harvard and Ead- 

 cliffe, 97-99; investigator, Ames Bot. Lab, 99- 

 08 ; head, dept. biol. hygiene. State Nor. Sch, 

 Trenton, N. J, 08- Instr, summer courses bot, 

 Harvard, 03-07. New Eng. Bot. Club. Roots 

 of vascular cryptogams, monocotyledons and 

 angiosperms; absorption of water vapor by 

 plants; homoeosis; cyclical reversion experi- 

 mentally induced in Droscra; recapitulation and 

 morphogenesis in Drosera; geographic distribu- 

 tion of nearly related species; Eria in the 

 Philippine Islands; biological education in ele- 

 mentary schools. 



LeBaron, Capt. J(ohn) Francis, Panama City, 

 Fla, winter, Essex, Mass, summer. Engineering, 

 Geology. Mass. Inst. Tech. Asst. and chief engi- 

 neer, Fitchburg R. R, 71-77; chief, archeol. expe- 

 dition to Florida, 77-78; asst. engineer, U.S. A, 

 80-84, 90; asst. div. and first asst. engineer and 

 acting gen. supt, Nicaragua Canal surveys and 

 construction, 87-90; chief engineer, Am. Hon- 

 duras Co, 98-02; pres. Moccasin Falls Ginseng 



