Methods and Philosophy 91 



1944: La dignite humaine (332 p., New York); translation entitled: Human 

 destiny (New York, 1947). 



Biologist, chemist, philosopher. 



Lenzen, Victor Fritz: 



1931: The nature of physical theory, a study in the theory of knowledge (314 

 p., New York; Isis 20, 488-91). 



1938: Procedures of empirical science (62 p., International encyclopedia of uni- 

 fied science 1 no. 5, Chicago). 



Lenzen is professor of physics at the University of California and author of 

 many reviews of books on the philosophy of science in Isis. 



L^vy, H.: 



1933: The universe of science (238 p., London: Isis 21, 328-30). 



Margenau, Henry: 



1950: The nature of physical reality. A philosophy of modern physics (486 p., 

 13 fig., New York; Isis 42, 69). 



Metzger-Briihl, Helene (1889-1944): 



1926: Les concepts scientifiques (195 p., Paris; Isis 9, 467-70). 



Student of mineralogy, chemistry, and general science, chiefly in the seventeenth 

 and eighteenth centuries (Isis 36, 133). 



Meyerson, Emile (1859-1933): 



1908: Identite et realite (3rd ed., Paris, 1926; Isis 9, 470-72 ) .—English transla- 

 tion (London 1930). 



1921: De I'exphcation dans les sciences (2 vols., 852 p., Paris; Isis 4, 382-85). 



1925: La deduction relativiste (412 p., Paris; Isis 7, 517-20). 



1931: Du cheminement de la pensee (3 vols., 1064 p., Paris; Isis 17, 444-45). 



1936: Essais (272 p., Paris). Posthumous publication. 



Meyerson had studied the history of chemistry under Hermann Kopp and he 

 remained deeply interested in the history of science, but he was primarily a phi- 

 losopher. 



Neurath, Otto (editor): 



1938f: International encyclopaedia of unified science (University of Chicago, Isis 

 83, 721-23; 37, 104; etc.). 



Nicolle, Charles (1866-1936): 



1932: Biologie de I'invention (178 p., Paris; Isis 19, 301). 



1934: La nature, conception et morale biologique (134 p., Paris). 



1936: La destinee humaine (106 p., Paris). 



Bacteriologist. 



Nippoldt, Alfred (1874-1936): 



1923: Anleitung zu wissenschaftlich^n Denken (Srd ed., 222 p., Potsdam). — 

 66th-75th ed., 232 p., Potsdam 1943. 



The author is a German student of terrestrial magnetism. 



Northrop, Filmer Stuart Cuckow ( 1893- ) : 



1931: Science and first principles (314 p.. New York; Isis 17, 273-77). 

 American philosopher and educator. 



Pelseneer, Jean: 



1947: L'evolution de la notion de phenomene physique, des primitifs a Bohr 

 et Louis de Broglie (177 p., Bruxelles; Isis 39, 194-96). 



The author teaches the history of science at the University of Brussels, and was 

 for some years attached to the history of science section of UNESCO. 



Planck, Max (1858-1947): 



1922: Physikalische Rundblicke (168 p., Leipzig), essays dealing with the 



