INDEX.
A.
[Acquired characters], definition of, [5];
inheritance of, [6], [15], [49], [57], [60], [67], [69], [71], [81], [83-84], [93-96], [104], [107], [110-111], [127], [173], et seq.;
Galton on inheritance of, [62], [106].
Adaptive development, Weismann on, [19].
Algae, De Vries on the chromatophores of, [83], [111].
Amphigony, the cause of individual hereditary variation, [91], [100-101].
Amphimixis, see [Sexual propagation].
Ancestral germ-plasm, [123].
B.
Bary, De, on Weismann’s theory, [152].
Basidiomycetes, [90].
Begonia, regeneration in, [4], [52].
Biophores, [123].
Body-cells, and germ-cells, [29].
Brooks, theory of heredity, [2].
Bud-variation, [90], [94], [96], [98-99];
Weismann on, [95], [97], [161];
Fritz Müller on, [95].
Butterflies, climatic varieties of and Weismann’s theory, [67-68], [127-128].
C.
Candolle, De, on inheritance of acquired characters in plants, [93].
“Carriers of Heredity,” [32], [38], [70], [78], [122].
Cessation of Selection, see [Panmixia].
Chromatophores, of Algae, [83], [111].
Compositae, pollen of, [5].
Congenital variations, definition of, [5];
sexual propagation, the cause of, [11];
Darwin on, [13];
origin of, [23], [25], [100], [102];
nutritive congenital changes, [64];
examples of, [64];
specialized congenital changes, [65];
representative congenital changes, [65];
Galton on, [134].
Continuity of germ-plasm, see [Germ-plasm].
Crustacea, and the inheritance of acquired characters, [94].
Cuttings, and bud-variation, [98].
Cytisus adami, grafting of, [127].
D.
Darwin, Charles, and Pangenesis, [2], [26];
arguments in favour of pangenesis, [3], [59];
on the cause of congenital variations, [13];
comparison of his theory of heredity with that of Weismann, [52], [55], [73], [92], [105-106], [115], [133], [173] et seq.;
on germ and somatic-cells, [76];
on the influence of pollen upon somatic tissues, [79-80];
on graft-hybridization, [83];
on bud-variation, [95];
on the causes of variation, [102], [161];
on the inheritance of acquired characters, [107], [111-112];
on Xenia, [144];
on sexual union, [154].
Death, Weismann on the origin of, [8], [10];
in plants, [10].
Determinants, [123].
Direct action of environment, on unicellular organisms, [15], [23].
E.
Elsberg, theory of heredity, [2].
Environment, direct action of on Protozoa, [15].
Evolution, see [Organic evolution].
F.
Flint, Prof. Austin, on Telegony, [204].
Focke, on Xenia, [141], [144].
“Formative material,” and germ-plasm, [56].
Fungi, Prof. Vines on Basidiomycetes, [90].
G.
Galton, Francis, theory of heredity (stirp), [2];
and Weismann’s, [51], [58-59], [69], [73], [92], [105-106], [108], [115], [129], [130] et seq.;
on gemmules, [60];
on inheritance of acquired characters, [62], [69], [107];
and stability of the material basis of heredity, [63];
on origin of sexual reproduction, [103], [167].
Gärtner, on Malva, [80];
on inheritance of acquired characters in plants, [93].
Gemmules, [2];
Darwin on the size of, [4];
and germ-plasm, [52], [55], [58], [92], [105];
and stirp, [58];
Galton on, [60].
Generative cells of the Hydromedusae, Weismann on, [71], [109];
example of continuity of germ-plasm, [72-73].
Germ-cells, and body-cells, [29], [75-77];
nucleo-plasm of, [30];
[Germ-plasm], Weismann’s theory of, [5], [105], [173] et seq.;
continuity of, [9], [18], [49], [56-67], [69-70], [72], [75], [78], [86-87], [104-105], [109-110], [114], [120], [168];
differences in, [12];
origin of, [17];
independence of, [19];
and natural selection, [21];
stability of, [22], [49], [57], [66], [86-89], [91-93], [99-100], [104-105], [109], [112-114], [151] et seq.;
lodged in nucleus, [29];
and somato-plasm, [29], [81], [110];
the modification of, [36];
examination of Weismann’s theory of, [48];
Weismann’s theory of and Pangenesis, [52];
and gemmules, [52], [55], [58], [105-106], [121];
multiplication of in the general cellular tissues of plants, [53];
De Vries on, [54];
Differentiation of, [55];
and “formative material,” 56;
and stirp, [58-59], [61], [75], [106];
and somatic-idioplasm, [69];
as a basis of heredity, [70];
ancestral germ-plasm, [123].
Grafting, and the effect of the somatic-tissues on the germinal elements, [81-82];
Darwin on, [83];
and bud-variation, [98];
Weismann on, [126].
H.
Häckel, theory of heredity, [2].
Hartog, Prof. M., on Weismann, [155];
on sexual propagation, [166-167].
Healing of wounds, [34].
Henslow, Rev. G., on regeneration in plants, [53].
Heredity, various theories of, [2], [49], [70];
statement of Weismann’s theory of, [17];
modification of Weismann’s theory of, [28], [46], [52], [65], [68], [75], [163] et seq.;
the nucleus and, [29];
“carriers of,” 32, [38], [70], [78], [122];
theory of and histology, [38];
examination of Weismann’s theory of, [48], [105], [117];
comparison of Weismann’s, Darwin’s, and Galton’s theories of, [51], [105-106];
criticism of Weismann’s theory of by Strasburger, [51];
the material basis of, [61], [63].
Hertwig, O., theory of heredity, [2];
Hildebrand, or effect of pollen upon somatic tissues (Xenia), [80];
on Orchideae, [80].
His, theory of heredity, [2].
Hoffmann, on the inheritance of acquired characters, [93-4], [114].
Hydromedusae, Weismann on generative cells of, [71], [109];
illustrate continuity of germ-plasm, [73-73].
I.
Identical twins, [41].
Idio-plasm, Nägeli’s term, [31];
A and B, [31-32];
self-multiplication of, [34];
amount of idio-plasm A in the nucleus, [40].
Ids, [123].
Individual differences, Weismann, [39], [41], [43].
Influence of a previous sire upon the progeny of the same dam, see [Telegony].
Influence of external conditions, see [Acquired characters].
Influence of pollen upon somatic tissues, see [Xenia].
Inheritance of acquired characters, see [Acquired characters].
Invertebrates, Weismann on sexual apparatus of, [72], [74], [109].
J.
Jelly-fish, regeneration in, [4].
Jordan, on inheritance of acquired characters in plants, [93].
K.
Karyokinesis, [37].
L.
Lamarck, Weismann and, [16], [21].
Lamarckian factors, importance of, [57], [59], [62], [65], [67], [69], [82], [106-108], [111-112], [128], [147].
M.
Malingié-Nouel, on Telegony, [193] et seq.
Malva, Gärtner on, [80].
Maupas, on the Protozoa, [101], [148].
[Metazoa and Metaphyta], cause of mortality of, [7], [24], [148];
relation of progeny to parents in, [16];
transmission of acquired characters in, [16];
propagation in, [51].
Mivart, on inheritance of acquired characters, [94].
Morton, Earl of, on Telegony, [192].
Müller, Fritz, on bud-variation, [95].
Multicellular organisms, see [Metazoa and Metaphyta].
N.
Nägeli, theory of heredity, [2];
and germ-plasm, [36];
on inheritance of acquired characters in plants, [93].
Natural selection, the cause of death, [8];
action of, [20];
the material for the operation of, [13], [57];
not the cause of sexual propagation, [13-14];
and the Protozoa, [15], [101-102];
and germ-plasm, [21];
sole cause of organic evolution, [25], [59], [111], [114].
Nouel, Malingié, on Telegony, [193] et seq.
Nucleo-plasm, of germ and somatic cells, [30].
Nucleus, alone contains germ-plasm, [29];
contains two substances, [33];
and heredity, [37];
and polar bodies, [40];
amount of idio-plasm A in, [40].
Nutritive congenital changes, [64].
O.
Orchideae, Hildeband on, [80].
[Organic evolution], the cause of, [25];
Weismann’s theory of, [26], [48], [50], [58], [66], [68], [87], [100], [104], [106-108], [114-115], [147].
Ova, Weismann on the size of, [39].
P.
Pallas, on variability, [154].
Pangenesis, Darwin’s theory of, [2], [26];
and Weismann’s theory of, [52], [55], [71], [73], [121];
and Panmixia, [59-60];
Galton on, [60].
[Panmixia], and Pangenesis, [59-60].
Parthenogenetic organisms, and natural selection, [15];
no congenital variations in, [72], [75].
Parthenogenetic ova, Weismann on, [45], [89], [91], [109].
Phylogenesis, [34].
Physiological isolation, of germ-cells, [74].
Plants, reproductive cells of, [74];
influence of pollen upon somatic tissues of (Xenia), [78-80];
bud-variation in, [90], [94-99];
Hoffmann’s investigations on the inheritance of acquired characters in, [93].
Polar bodies, Weismann on, [40], [46], [125];
examination of Weismann’s explanation of, [42];
Protophyta, natural selection and, [114].
Protozoa, immortality of, [7];
and natural selection, [15], [114];
origin of species of, [15], [102];
action of environment on, [15];
Maupas on, [101].
R.
Regeneration, in sea-anemones and jelly-fish, [4], [35];
of an entire organism, [34];
Weismann on, [51] et seq.;
in Begonia, [52];
Rev. G. Henslow on, [53];
and stirp, [59].
Rejuvenescence, [166].
Representative congenital changes, [65].
[Reproduction], essential meaning of sexual, [8], [11];
in the Protozoa, [16];
somatic, [35].
Reproductive elements, potential immortality of, [9];
of Vertebrates and Plants, [74].
Roux, on the principle of “struggle,” [139].
S.
Sea-anemones, regeneration in, [4].
Sexual apparatus of Invertebrates, Weismann on, [72], [74].
Sexual-cells and somatic-cells, [75-77], [81], [84].
[Sexual propagation], essential meaning of, [8], [11], [87];
sole cause of congenital variations, [12], [89-90], [102], [135], [141], [153], [158];
did not arise through the agency of natural selection, [13-14];
in multicellular organisms, [51];
Galton on the origin of, [103];
in Cytisus adami, [127].
Significance of sexual reproduction, see [Sexual Reproduction].
Somatic-cells, nucleo-plasm of, [30];
and sexual cells, [75-77], [81], [84].
Somatic-idio-plasm, [32-33];
and germ-plasm, [69].
Somatic reproduction, [35], [52].
Somato-plasm and germ-plasm, [29].
Specialized congenital changes, [65].
Species, Weismann on the origin of new, [100-101].
Spencer, Herbert, theory of heredity, [2];
on Telegony, [191] et seq.
Stability of germ-plasm, see [Germ-plasm].
Stirp, and gemmules, [58-59], [61];
and somatic tissues, [60];
and the germinal cells of Hydromedusae, [73];
and germ-plasm, [75], [92], [106], [133].
Strasburger, on Weismann’s theory of heredity, [51];
on the origin of sexual propagation, [167].
Stylonichia, Maupas on, [101].
Summary, [103].
T.
[Telegony], [77-79], [110], [141] et seq., [191] et seq.
Transmission of acquired characters, see [Acquired characters].
Twins, identical, [41].
U.
Unicellular organisms, reproduction of, [16];
action of environment on, [23], [147] et seq.;
potentially immortal, [23];
natural selection and the, [24], [57], [114];
and the origin of hereditary individual variations, [100].
V.
Variation, see Congenital variations, [Acquired characters], &c.;
Darwin on the causes of, [102];
Weismann on the origin of, [153].
Vertebrates, reproductive cells of, [74].
Vestigial organs, persistence of, [91].
Vines, Prof. S., criticism on Weismann, [14], [75], [90], [99], [152], [178];
on the Basidiomycetes, [90].
Vries, De, theory of heredity, [2];
on germ-plasm, [54];
on the chromatophores of Algae, [83], [111];
on Xenia, [144].
W.
Weismann, Prof. August., theory of germ-plasm, [5], [17], [173] et seq.;
on the duration of life, [7], [10];
on the essential meaning of sexual propagation, [11], [103], [135], [141];
on natural selection as the origin of sexual reproduction, [14];
on Prof. Vines’ criticism, [14], [90], [99], [178] et seq.;
on the Protozoa and natural selection, [15], [102];
on Lamarck, [16];
on adaptive development, [19];
and natural selection, [21];
summary of theory of germ-plasm, [23];
theory of organic evolution, [26], [48], [50], [58], [66], [68], [87], [100], [104], [106-108], [114-115], [147];
modifications of theory of heredity, [28], [46], [52], [65], [68], [75], [163] et seq.;
and of self-multiplication of idio-plasm, [34];
on “ontogenetic grades,” [35], [53];
on the modification of germ-plasm, [36];
on chromatin, [38];
on individual differences, [39], [41], [43];
on the size of ova, [39];
on polar bodies, [40], [42], [46], [125];
on the number of germ-cells, [44-45];
on parthenogenetic ova, [45], [89], [91];
examination of his theory of germ-plasm or heredity, [48], [85];
on the stability and continuity of germ-plasm, [49], [63], [66], [86-89], [91-93], [99-100], [103-105], [107], [109-110], [112-114], [120], [151], [158];
comparison of his theory with those of Darwin and Galton, [51], [58];
on Strasburger’s criticism of his theory, [52];
on the multiplication of germ-plasm in the general cellular tissues of plants, [53];
on regeneration in plants, [53];
anticipated by Galton, [59], [68];
and Galton, [63], [130] et seq.;
on transmission of acquired characters, [67], [83], [96], [111], [127];
and his critics, [70];
on the Hydromedusae, [71], [109];
on the sexual apparatus of Invertebrates, [72];
and the influence of germ-cells upon somatic tissues (Telegony and Xenia), [80-81], [196] et seq.;
and the significance of grafting, [81-82], [126];
and vestigial characters, [92];
on Hoffmann’s investigations, [93];
on bud-variation, [95], [97], [161];
on the origin of hereditary individual variations, [100-101];
on the origin of new species, [101].
Wounds, healing of, [34].
X.
[Xenia], [78-81], [110], [141], [144], et seq.
THE END.
Works by the same Author.
Animal Intelligence. Crown 8vo, 520 pages, cloth, 5s. Kegan Paul, Trench, & Co., Paternoster Square, E.C.
Mental Evolution in Animals. Demy 8vo, 411 pages, cloth, 12s. Kegan Paul, Trench, & Co., Paternoster Square, E.C.
Mental Evolution in Man. Origin of the Human Faculty. Demy 8vo, 452 pages, cloth, 14s. Kegan Paul, Trench, & Co., Paternoster Square, E.C.
Jelly-Fish, Star-Fish, and Sea-Urchins. A Research on Primitive Nervous Systems. Crown 8vo, 323 pages, cloth, 5s. Kegan Paul, Trench, & Co., Paternoster Square, E.C.
Darwin and after Darwin. An Exposition of the Darwinian Theory and a Discussion of Post-Darwinian Questions. Part I, crown 8vo, 460 pages, cloth, 10s. 6d. Longmans, Green, & Co., Paternoster Row, E.C.