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accessory idioplasm ancestral form ancestral species animals appear arise assume assumption become active biophors blastogenic blastomeres body cell-body centrosome chromatin colour combination complete consequently consists contain corresponding Darwin definite depends deter differentiation double determinants ectoderm embryogeny embryonic endoderm entire epidermis exist explain fact father female fertilisation formation gemmation gemmules germ germ-cells germ-plasm germ-track give rise group of idants groups of determinants halves hereditary substance heredity homodynamous determinants homologous homologous determinants hybrid Hydroids id of germ-plasm individual instance kinds large number latter layer male medusa mesoderm Metazoa micella minants modified multiplication nucleus number of idants number of ids occur offspring ontogeny organism ovum pangenes pangenesis parent peloric phenomena of heredity plants plasm polype possess present primary constituents process of amphimixis produced reducing division regards regeneration resemblance result reversion sexual reproduction similar somatic cells spermatozoa stage structure suppose take place theoretical tion transmission undergo variation Vries wings
Page 295 - Jesus was the author and finisher of the faith; to* which nothing can be added, and from which nothing can be taken...
Page 441 - ... that is, in multicellular organs possessing highly differentiated cells — the nucleus took on other functions, which regulated the specific activity of the cell, though it still retained biophors capable of supplying the characters of the cells which were still wanting and therefore still better served as the bearer of the biophors controlling the character of the cell. If, therefore, a special apparatus for transmission became necessary in the hetero-biophorids or unicellular organisms and...
Page 198 - The adjacent, and, in a broad sense, separate lines of growth in which the patent and latent elements are situated, diverge from a common group and converge to a common contribution, because they were both evolved out of elements contained in a structureless ovum, and they jointly contribute the elements which form the structureless ova of their offspring.
Page 422 - But he forcibly states his belief that we cannot possibly attribute the immense number of adaptations to rare fortuitous variations occurring only once. "The necessary variations from which transformations arise by means of selection must," he says, "in all cases be exhibited over and over again by many individuals.
Page 1 - We must infer that a plant or animal of any species, is made up of special units, in all of which there dwells the intrinsic aptitude to aggregate into the form of that species : just as in the atoms of a salt, there dwells the intrinsic aptitude to crystallize in a particular way.
Page xiii - There is now scarcely any doubt that the entire conception of the production of the 'gemmules' by the bodycells, their separation from the latter, and their 'circulation', is in reality wholly imaginary. In this regard I am still quite as much opposed to Darwin's views as formerly, for I believe that all parts of the body do not contribute to produce a germ from which the new individual arises, but that on the contrary, the offspring owes its origin to a peculiar substance of extremely complicated...
Page 332 - I have seen a single flower exactly divided in halves, one side being bright yellow and the other purple ; so that one half of the standard-petal was yellow and of larger size, and the other half purple and smaller.
Page 198 - Therefore each individual may properly be conceived as consisting of two parts, one of which is latent and only known to us by its effects on his posterity, while the other is patent, and constitutes the person manifest to our senses.
Page 378 - It has often been supposed that drunkenness of the parents at the time of conception may have harmful effect on the nature of the offspring. The child is said to be born in a weak bodily and mental condition, and inclined to idioey, or even to madness, etc., although the parents may be quite normal both physically and mentally.
Page 104 - ... referred to. The ability of an organism to recomplete itself when one of its parts has been cut off, is of the same order as the ability of an injured crystal to recomplete itself. In either case, the newly-assimilated matter is so deposited as to restore the original outline. And if in the case of the crystal, we say that the whole aggregate exerts over its parts, a force which constrains the newly-integrated atoms to take a certain definite form ; we must in the case of the organism, assume...