DURING the past few years, in the course of an investigation of the chemical composition of the acroblasts (‘Golgi apparatus’) in the spermatogenesis of the water-boatman (Notonecta glauca), I have ...
The fine structure of the mature spermatozoon of the insect Thermobia domestica has been investigated. This flagellate spermatozoon is unique with respect to the relative positions of the centriole, ...
PLATNER in 1886, when dealing with the spermato-cytes of helix, showed that the great “nebenkern” in these elements was derived after each division from a coalescence of the spindle-fibres. At the ...
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