46 Gen. Sub . 
I. GENERAL SUBJECTS. 
[ 1905 ] 
Method in biology, address, Heider (302). 
Chaotic state of zoology, Perrier (540). 
Modern biology, review of Wasmann, v. Wagner (728). 
Biology and mathematics, Halsted (284). 
Zoology and medicine, Blanchard (56). 
b. Philosophical : — 
Relations of sciences and biology, Ostwald (623). 
Questions of principle in natural science, Verworn (719). 
The hypotheses and problems of biology, Reinke (573). 
Biological theories, Herrera (312). 
Biological theory, historical, RAdl (567). 
Origin of living matter, Herrera (311). 
Origin of life, Benedikt (45). 
Nature and life, de Varigny (712). 
Mechanism and vitalism, plasmology, Pi&ron (555). 
Vitalism, Schneider (632). 
Vitalismus and teleology, Kassowitz (360). 
Neovitalism, Bieganski (49) ; Neovitalism, criticism of Reinke, 
Kienitz-Gerloff (370, 371). 
Semon’s Mneme theory, Forel (228) ; Mneme, Semon’s views, 
Rosenthal (593). 
Biogenesis, Haeckel’s law of, Schmidt (627). 
biological basis of morality, FouillIse (231). 
Natural knowledge or implicit faith ?, Forel (229).; — Natural knowledge 
or implicit faith?, intolerance?, Wasmann (740). 
c. Evolution : — 
Evolution, M£hely (469), Orchard (518). 
The discussion as to evolution, Haeckel (281). 
The laws of evolution, Giddings (255). 
Laws of modification, Bohn (66). 
Evidence of evolution, de Vries (175). 
Arguments against evolution, Hadley (279). 
Evolution, oecological aspect, Case (107). 
Evolution, essays bearing on, Saleeby (604, 605). 
Darwinism, Wachter (725). 
Darwinism in Greek philosophy, May (461). 
Later Darwinism, von Wagner (727). 
Psycho-physical teleology, Darwinismus Lamarckismus, Pauly (531). 
Species and evolution, Cook (146). 
Geology and origin of species, White (751). 
Formation, geological, of a species, Walker (731). 
Ontogenetic species etc., D. S. Jordan (354). 
Differentiation of species by sex-structures, Petersen (548, 549). 
Species difterentati on by physiological isolation, Petersen (547). 
Origin of species by segregation and habit, Gulick (275). 
Origin of species by isolation, D. S. Jordan (351). 
Origin of species, climate chief factor, Allen (7). 
Origin of species, Cestodea, Schneider (630). 
Origin of species and varieties by mutation, De Vries (176). 
Mutation theory, Bailey (17), Castle (110), Casey (108), Conklin (140), 
Dwight (198), MacDougal (445), Wheeler (750), Plate (557), Webber 
(742), Schimkewitsch (623), in Russian with German summary. 
Mutation theory, domestic animals, Keller (367). 
Selection and definite variation contrasted, Morgan (491). 
Evolution of species without mutation, distribution and paleontology, 
Davenport (162). 
