384 RECORD OF SCIENCE FOR 1886. 



NECROLOGY OF PHYSICISTS, 1886. 



Draper, John Christopher, professor of chemistry in the medical 

 department of the University of the City of JSTew York. Known 

 as a writer on optical subjects and the author of a text-booK on 

 medical physics. Died in New York, December 20, 1885, in his 

 fifty-first year. 



Jamin, J., perpetual secretary of the Academy of Sciences, author of a 

 'i Cours de Physique," and well known for his investigations in phys- 

 ics, especially in optics and electricity. Died in Paris, of heart 

 disease, February 12, 1886, aged seventy-three years. 



GUEROUT, AuGUSTE, Secretary of the board of editors of La Lumiere 

 l^lectrique. Known as a writer on electrical subjects. Died in 

 Paris, from consumption, in March, 1886, at the age of forty years. 



Melsens, L. H. F., member of the Royal Academy of Sciences, Bel- 

 gium. Known for his scientific memoirs, especially on lightning 

 protection Died in Brussels, April 18, 1886. 



Mann, R, J., president of the Meteorological Society. Known as a 

 writer on meteorological subjects, particularl}^ on the protection 

 of buildings from lightning. Died in London, in August, 1886, 

 aged sixty-nine years. 



DuBOSCQ, J., constructor of physical apparatus, especially optical. As- 

 sisted Leon Foucault in all his constructions, particularly his elec- 

 tric lamp. Died in Paris, in October, 1886. 



Guthrie, Frederick, F. R. S., lecturer on physics in the Royal School 

 of Mines. Well known for his physical researches, especially those 

 on the cryohydrates and eutexia. He was the author of several 

 text-books. Died in London, of cancer of the throat, October 21, 

 1886, at the age of fifty-three. 



Pierie, Victor, professor of physics in the University of Vienna. 

 Died in his laboratory, of apoplexy, on the 30th of October, 1886. 



Beaulieu, John Theophilus, F. R. S., a general in the engineer 

 corps of the Indian army for many years. He inaugurated the sys- 

 tem of magnetic observations in India. Died in London, in No- 

 vember, at the age of eighty-one years. 



bibliography OF physics, 1886. 



a First Course of Physical Laboratory Practice. A. M. Wortliingtou, M. A., late as- 

 sistant master of Cliftou College. Loudon, 1886. (Riviugtons.) 



Handbuchder physikalischen Maassbestimmuugen. B. Weiustein. Bandi. 8vo. pp. 

 XX, 5-24. Berlin, 1886. (Springer.) 



Units and Physical Constants. J. D. Everett. 16mo. pp. xvi, 200. Second edition. 

 Loudon and New York, 1886. vMacmillan.) 



Lehrbucb der teebnischen Mechanik. Theil i. Statik des Stemen-Systems. L. 

 Henueberg and O. Smerker. 8vo. pp. x, 374. Darmstadt, 18"i6. (Bergstraesser.) 



A Treatise on Statics, with Applications to Physics. G. M. Minchin, M.A. Third 

 edition. Vol. ii, 8vo. pp. vi, 51:^. Oxford, 1886. (Clarendon Press.) 



