280 E. VICTOR SMITH 



Fine accessory processes, terminating within the capsule, some 

 with and some without end enlargements, are present in the Gas- 

 serian ganglion of the old hen. Similar accessory processes were 

 less frequently observed in the owl and other birds. 



Pericellular networks were especially well shown in the vagus 

 of the old hen. They occur in the ganglia of other birds, 

 especially in the owl. 



A close meshed perinuclear network was observed in ganglion 

 cells of the Gasserian of the chick. 



The cells of the sensory ganglia of birds are surrounded with 

 connective tissue sheaths in which are elliptically-shaped nuclei. 

 These nuclei are more numerous in the goose and duck than in 

 the other birds examined. The ganglia also show mantle-like 

 nuclei, in considerable numbers, in the intercellular spaces. No 

 true multipolar cells were observed in sensory ganglia. 



Non-medullated fibers from the sympathetic were observed in 

 all ganglia studied and in some instances the fibers could be 

 traced to pericellular networks. 



BIBLIOGRAPHY 



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Chase, M. R. 1909 A histological study of sensory ganglia. Anat. Rec, vol. 3. 



Cajal, R. S 1906 Die Struktur der sensiblen Ganglien des Menschen und der 

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Cavazzani, E. 1897 Sur les ganglions spinaux. Archives Italiennes de Biologic, 

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