...He showed convincingly that the development of every organismconsists of a series of new formations, and that there is no tracewhatever of the complete form either in the ovum or the spermatozoon... 
Ernst Haeckel 「The Evolution of Man」
...On the other hand, the next cell which we have toconsider in the process of conception, the male sperm-cell or spermatozoon, isone of the smallest cells in the animal body...
Ernst Haeckel 「The Evolution of Man」
...In the previousillustrations we have distinguished in the spermatozoon a head, trunk, andtail...
Ernst Haeckel 「The Evolution of Man」
...Thelively spermatozoon travels towards the ovum by its serpentine movements, andbores its way into the female cell (Fig...
Ernst Haeckel 「The Evolution of Man」
...It bears in the cell and nuclearmatter of the penetrating spermatozoon a part of the father’s body, andin the protoplasm and caryoplasm of the ovum a part of the mother’s body...
Ernst Haeckel 「The Evolution of Man」
...It inherits from the father by means of the spermatozoon, and from themother by means of the ovum...
Ernst Haeckel 「The Evolution of Man」
...The life of the stem-cell or cytula is the product or resultant ofthe paternal life-movement that is conveyed in the spermatozoon and thematernal life-movement that is contributed by the ovum...
Ernst Haeckel 「The Evolution of Man」
...It is the latter alone that combinesin conception with the invading nucleus of the fertilising spermatozoon (thepronucleus masculinus)...
Ernst Haeckel 「The Evolution of Man」
...This tiny round corpuscle of chromatin now acts as a centre ofattraction for the invading spermatozoon in the large ripe ovum, and coalesceswith its “head,” the male pro-nucleus...
Ernst Haeckel 「The Evolution of Man」
...The spermatozoon then bores its way into this with itshead, the tail outside wriggling about all the time (Fig...
Ernst Haeckel 「The Evolution of Man」
...Most of the earlier observersthought that the spermatozoon did not penetrate into the ovum...
Ernst Haeckel 「The Evolution of Man」
...And even whenthis had been demonstrated, the spermatozoon was believed to disappear in theovum without leaving a trace...
Ernst Haeckel 「The Evolution of Man」
...A piece of the paternal soul goes with-the spermatozoon, and a piece of themother’s soul remains in the ovum...
Ernst Haeckel 「The Evolution of Man」
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