362 



AMERICAX MEN OF SCIENCE 



N. Y, June 23, 41. A.B, Yale, 62, A.M, 64. On 

 'Nautical Almanac' Corps, 62-64; asst. prof. 

 math, U. S. Naval Acad, 6470; prof, Kenvon, 

 70-72; St. John's (Md), 72-81; V. S. Naval 

 Acad, 81- Corps math, professors, U.S.N, 13- 

 Math. Soc; cor. mem. British Ass; London Math. 

 Soc. Differential calculus; integral calculus; 

 curve tracing; differential equations; least 

 squares; mechanics. 



Johnston, Clarence T, University of Michigan, 

 Ann Arbor. Mich. Irrigation engineering. Near 

 Denver, Colo, Oct. 23, 72. B.S, Michigan, 95, 

 C.E, 99. Asst, state engineer's office, Wyo, 88- 

 91, summers, 91-95; gaging streams, Wyo, for 

 U. S. Geol. Surv, 95-97; asst. state engineer, 

 Wyo, 96-98 ; asst. chief of irrig. investigations, 

 U.'S. Dept. Agr, 98-03; state engineer, Wyo, 03- 

 11 ; prof, geodesy avd surv, Michigan, 11- Con- 

 sulting irrig. engineer, 97-99. A. A; Civil Eng; 

 Ass. State Engineers; Wyo. Soc. Eng. and Surv. 

 Irrigation law and engineering; flow of water 

 in canals and ditches; design of irrigation struc- 

 tures; coefficient of friction and value of coeffi- 

 cient of roughness (Kutter's formula). 



Johnston, Dr. Earl S(teinford), Maryland Agri- 

 cultural Experiment Station, College Park, Md. 

 Plant physiology. Quarryville, Pa, Feb. 5, 89. 

 Ph.B, Dickinson, 13, A.M, 14; Ph.D, Hopkins, 

 17. Instr. science, Pennington Sch. for Boys, 

 13-14; asst, physiol, Hopkins, 14-17; assoc. 

 plant physiologist, Md. Exp. Sta, 17- Asst, 

 desert lab, Carnegie Institution, summer, 15. 

 A.A; Bot. Soc. Growth and climatic condi- 

 tions; mineral nutrients. 



Johnston, Prof. John, Yale University, New 

 Haven, Conn. *Chemistry. Perth, Scotland, 

 Oct. 13, 81. Carnegie scholar, St. Andrews, 

 Scotland, 03-05, B.Sc, 03, D.Sc. OS, 1851 Exhi- 

 bition scholar, Breslau, 05-07; A.M, Yale, 19. 

 Research assoc. physical chem, Mass. Inst. Tech, 

 07-08; chemist, geophys. lab, Carnegie Insti- 

 tution, 08-16; in charge, research dept. Am. 

 Zinc, Lead and Smelting Co, 16-17; chemist, 

 U. S. Bur. Mines, 17-18; with Nat. Research 

 Council, 18-19; prof. chem. and chairman of 

 dept, Yale, 19- Mem. Nat. Research Council. 

 A.A. (sec'y, C, 12-16) ; Electrochem. Soc; Chem. 

 Soc. (ed. board, 14-); Min. Eng; Ceramic Soc; 

 Soc. Test. Mat; Inst. Metals. Physical. chem- 

 istry ; geochemistry. 



Johnston, Dr. J(olm) Allen, Millen. Ga. A7wt- 

 omy. Augusta, Ga, Dec. 18, 83. M.D, Georgia, 

 08. Asst. prof, anat, Georgia, 08-18. Asst. 

 physician, City View Sanitarium, Nashville, 

 Tenn, 09-10; health commissioner, WalJce Co, 

 Ga, 20- Am. Med. Ass. Embryology; chondro- 

 cranium of the albino rat. 



Johnston, Prof. J(ohn) B(lack), University of 

 Minnesota, Minneapolis, Minn. ^Neurology. 

 Belle Center, Ohio, Oct. 3, 68. Ph.B, Michig'au, 

 93, Ph.D, 99; Smithsonian table, Naples Zool. 

 Sta, 04-05; Freiburg, 05. Asst. and instr, zool, 

 Michigan, 93-99 ; asst. prof, West Virginia, 99- 

 00, prof, 00-07; asst. prof. anat. of nervous 

 system, Minnesota, 07-08, assoc. prof. comp. 

 veur, 08-09, prof, 09-, dean, col. science, lit. and 

 arts, 14- Mem. ed. staff, 'Ergeb. u. Fort. d. 

 Zool,' 07-; mem. ed. board, 'Jour. Comp. Neur, ' 



08- A.A; Soc. Nat; Soc. Zool; Ass. Anat; 

 Minn. Neur. Soc ; Mich. Acad. Nervous system 

 of vertebrates; development of heart and blood 

 vessels in Amphibia; circulation in earthworms; 

 morphology of vertebrate head; evolution and 

 morphology' of the mechanisms of correlation in 

 the vertebrate nervous system; vertebrate fore- 

 brain and cerebral cortx; university education 

 and administration. 



Johnston, John E(obert), Obrapia 37i{; (altos), 

 Havana, Cuba. Plant pathology. Ludlow, Vt, 

 June 19, 80. B.S, Harvard, 02, M.S, 04. 

 Plant path, lab, bur. plant indust, U. S. Dept. 

 Agr, 05-10; pathologist, Estacion Exp. de los 

 Productores de Azucar, Rio Piedras, P. R, 10- 

 14; Estacion Exp. Agron. Santiago, Cuba, 14- 

 17; chief, office veg. sanit, 16- ; prof, plant path, 

 Univ. Havana, 18-20; director trop. research, 

 United Fruit Co, SO- Bot. exped. to Margarita, 

 Venezuela, 01 ; Gray Herbarium exped. to Mar- 

 garita and Trinidad, 03 ; sugar cane disease 

 surv. of Santo Domingo, P. R. Board of Commis- 

 sioners of Agr, 11; sugar cane disease surv. of 

 south. U. S, U. S. Dept. Agr, 13. A.A; Bot. 

 Soc; Wash. Bot. Soc. Flora of Margarita, 

 Venezuela; coconut, sugar cane and banana dis- 

 eases; entomogenous fungi. 



Johnston, R(obert) A(ngus), Geological Survey 

 of Canada, Ottawa, Can. Mineralogy. Reach, 

 Ont, July 5, 67. Toronto. Asst. chemist, Can. 

 Geol. Surv, 87-07, mineralogist, 07- Fel. Royal 

 Soc. Can. Rocks; meteorites. 



Johnston, W(illiani) A (If red), Geological Survey 

 of Canada, Ottawa, Can. Geology. Aberarder, 

 Ont, Jan. 24, 74. M.A, Queen's (Can), 03, 

 B.S, 05; Yale. Geologist, Can. Geol. Surv, 05- 

 Geol. Soc; fel. Am. Geog. Soc. Pleistocene 

 geology of Canada. 



Johnston, Prof. WiUiam A(tkinson), Massachu- 

 setts Institute of Technology, Cambridge, Mass. 

 Mechanical engineering. Boston. Mass, Aug. 31, 

 68. B.S, Mass. Inst. Tech, 92. Asst. mech. 

 eng, Mass. Inst. Tech, 92-94, instr, 94-00, asst. 

 prof, 00-06, assoc. prof, 06-12, prof, theoret. 

 and applied mech, 12- A.A; Mech. Eng; Soc. 

 Test. Mat. Applied mechanics; strength of ma- 

 terials. 



Johnstone, Dr. J(ohn) H(amilton) L(ane), Dal- 

 housie University, Halifax, Can. Physics. Pic- 

 tou, N. S, 91. "M.Sc, Dalhousie, 13; 1851 Ex- 

 hibition scholar, London, 14-16; Ph.D, Yale, 16. 

 Instr. physics, Dalhousie, 12-14, 19-20, asst. 

 prof, SO- Physical Soc; N. S. Inst. Radio- 

 activity ; electrical conductivity. 



Johonnott, Prof. Edwin S(heldon), 2245 N. 10th 

 St, Terre Haute, Ind. ^Physics. Richmond, 111, 

 Nov. 9, 68. B.S, Rose, 93, M.S, 97; Hopkins, 

 95-96; fellow, Chicago, 97-98, Ph.D, 98. Ex- 

 aminer, U. S. Patent Office, 94; prof, physics 

 and math, Drury, 94-95; asst, Chicago, 98-99; 

 assoc. prof, physics, Bose, 99-09, prof, 09- 

 A.A; Physical Soc. Thickness of thin liquid 

 films; Rayleigh's alternate current phasemeter; 

 losg of energy by hysteresis in iron; alternating 

 currents; arc and spark phenomena in trans- 

 formers. 



Jonas, Dr. A(nna) I(sabel), 91 W. Commerce St, 

 Bridgeton, N. J. Geology. Bridgeton, Aug. 



