3. 

 a result, one axis is somewhat longer than the other, 

 is shown in Pi . , L, I., the normal two-celled stage, in 

 which - res are equal. In - . , ow v .■, we 



have an irregular segmentation, with one cell much Larger 

 than the other an - vacuole in the line of division. Of 



this £ype juite a number were foun . 



.33, PI, II,, shows a flat two-celled blastoderm not 

 definitel. riblast, 



nuclei : ■ T :• - farrow has 



formed, but the cell wall has not yet come into existence. 



.e line of division, the protoplasmic reticulum has form- 

 very delicate network of dendritic fibrils arra 

 transversely to the plane of cleavage, Oellacher ( '72, 



-scribes - l ures a section thrc cells of 



a four-celle - Irout very line this, 



says an indistinct streak made up of faint granulations runs 

 vertically from the external groove -towards the base, Henne- 

 guy ('86, Lg, 60) giv two-celled stage very 



line Fig. 3:; PI, I,, and says that the fine line di 1 i i 



two cells is bordered on each si clear protoplasm 



which is traversed by very fine lines parallel to each other 



erpendicular to the median line and that these fine 

 lines lose themselves in the surrounding protoplasm. His 



