No. I.] SPERMATOGENESIS OF BATRACHOSEPS. 41 



in the granosphere, sometimes again on the circumference of 

 the sphere. At other times it is found a considerable distance 

 out in the plasmosphere. It is at times impossible to distin- 

 guish the true archosome from the accessory centrosomes, as 

 their structure is similar, though we might, with considerable 

 certainty, assume that the body with two centrioles situated in 

 or on the granosphere is the true archosome, but even about 

 this we cannot always be certain. Sometimes there is more 

 than one such body in the granosphere, while, on the other 

 hand, two-centrioled bodies are also found in the plasmosphere. 

 Even when the central spindle is being formed, and at a time 

 when the archosome is situated at the pole of the aster, we 

 find in the cytoplasm bodies in no apparent way differing 

 from the archosome. At other times we find what appears to 

 be the true archosome connected by a thread-like process with 

 one or more accessory archosomes (Figs. 10-17, 27-33). This 

 thread-like connection is the remains of the somosphere which 

 has been pulled out from the original somosphere surrounding 

 the archosome from which the budding took place (Fig, 14 a). 

 Such rings of somosphere are seen almost in every cell, often 

 in considerable numbers. Why the thread assumes the form 

 of a ring is not quite apparent, but may be explained by sup- 

 posing that it follows the inner walls of a vacuole. This will, 

 however, not explain all forms, as in many instances the thread 

 on which the centrosomes are suspended circles around the 

 granosphere, or seems otherwise to be entirely buried in the 

 cytoplasm. In other instances the granules connected by 

 the thread are also suspended on the rays of some fiber cone 

 or on some spindle cone. The granules so suspended are not 

 as a rule all of the same size and staining capacity, as some 

 will stain intensely, while others adjoining hardly stain at all. 

 Frequently this loss of staining capacity decreases as the gran- 

 ules are situated farther away from the archosome or accessory 

 archosome from which they budded. The same also often 

 holds good as regards size, those farthest away being the 

 smallest. To this general rule there are many exceptions; 

 small and large granules often alternate, and so do darkly 

 stained ones, with those that are lighter. 



