226 MARGARET R. MURRAY. 



close as to support the presumption that they have the common 

 origin which their form and distribution suggests. 



The work of Gatenby and his associates, on insect orogenesis 

 and other invertebrate problems, has led them to similar con- 

 clusions as to the role of mitochondria in secretion. In a 1920 

 paper, Gatenby and Woodger go so far as to state that in nearly 

 all eggs where fat granules a,re present, examination has revealed 

 that such "yolk" is derived either from Golgi elements or from 

 mitochondria. It seems possible that some of the present 

 divergence of opinion as to the function of mitochondria in the 

 cell is due to the diversity of the material used in the investigation 

 of the problem. The absence in the cricket follicle cells of 

 inclusions which will satisfy the assembled criteria of Golgi 

 bodies, is another case in point. 



VI. SUMMARY. 



1. Follicle cells of the B stage rarely if ever divide during the 

 development of the oocyte up to and through the A stage, 

 although these cells change in size and shape during that period. 



2. The amitotic configuration of the nucleus may be regarded 

 as an adaptation to the secretory activity of the cell, having as 

 its main function the increase of nuclear and nucleolar surface. 



3. Droplets of a fatty nature are elaborated by the follicle 

 cells and passed in large numbers into the hsemocoel of the insect. 



4. The mitochondria of the follicle cells represent an inter- 

 mediate stage between lipoid granules appearing in the nucleus 

 of the follicle cell and lipoid granules surrounding the yolk 

 globules of the egg. 



5. No inclusions corresponding entirely to current descriptions 

 of Golgi bodies have been observed in egg or follicle cell. 



LITERATURE. 

 Bast, T. H. 



'21 Types of Amitosis in Bone Cells. Amer. Jour. Anat., X XI X., September. 

 Bell, E. T. 



'14 Differential Staining of Fats. Jour. Pathol. and Bact.. XI X. 

 Bowen, R. H. 



'19 New Methods for Analysis of Cytoplasmic Structures. Proc. Soc. Exp. 

 Biol. and Med., XVII. 



'22!) Idiosome, Golgi and Acrosome. Anat. Rec., XXIV. 

 Coghill, G. E. 



'15 Preliminary Studies on Intracellular Digestion and Assimilation in Am- 

 phibian Embryos. Science, XI. 11. 



