ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 67 



Parasitic Spiral Organism in Stomach of Cat. — R. K. S. Lm 

 {Parasitology, 1920, 12, 108-12, 1 pi.). Description of an extremely 

 active organism, averaging 4 to 8 /a in length, with regular closely set 

 spirals about 0*75 /x broad, found in the stomachs of eight cats, none of 

 which showed any obvious signs of gastric disturbance. The organism 

 occurred in the lumina of ducts and glands throughout the stomach, and 

 also within the oxyntic cells. They were not seen elsewhere except at 

 the very beginning of the duodenum. The organisms are new species 

 of Spirochfetoidese. J. A. T. 



Capillitia of Mycetozoa. — A. E. Hilton {Journ. Quekett Micr. Club, 

 1919, 14, 1-8). There is great diversity in the nature of the capillitial 

 threads associated with the masses of spores within the sporangia of 

 Mycetozoa. The threads may be rigid or flexible, free or attached, solid 

 or tubular, simple or branched, sparingly forked or forming a network, 

 and so on. They have their origin in the processes, structural and 

 metabolic, by which the plasm of an amoeboid plasmodium is converted 

 into the plasm of innumerable spores. The mode of development is 

 described. "From first to last, the capillitial threads, notwithstand- 

 ing their variety and often elaborate details, are sterile things, of only 

 secondary importance, and of little biological significance." J. A. T. 



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