. Elements of pathological anatomy. Anatomy. SECT. V.] GANGLIA : THEIR LESIONS. 483 Fig. 48. sequences, would seem probable, from the similarity of their structure ; but what the resultant changes are, the present state of the science does not enable us to point out. Pro- fessor Lobstein,* of Strasburgh, has found the thoracic ganglia and the semi-lunar plexus repeatedly very much engorged with blood, and of a lively red color, from the effects, evi- dently, as he supposes, of inflammation ; and similar phenom- ena have been noticed by other observers. In the yellow fever which prevailed at Na
. Elements of pathological anatomy. Anatomy. SECT. V.] GANGLIA : THEIR LESIONS. 483 Fig. 48. sequences, would seem probable, from the similarity of their structure ; but what the resultant changes are, the present state of the science does not enable us to point out. Pro- fessor Lobstein,* of Strasburgh, has found the thoracic ganglia and the semi-lunar plexus repeatedly very much engorged with blood, and of a lively red color, from the effects, evi- dently, as he supposes, of inflammation ; and similar phenom- ena have been noticed by other observers. In the yellow fever which prevailed at Natchez, in the state of Mississippi, in 1823, disease of the thoracic and abdominal portion of the great sympathetic appears to have been exceedingly common. Of twenty subjects examined by my distinguished friend Dr. Cartwright, of that city, seventeen presented inflammation of the semi-lunar ganglia and their plexuses: their vessels were greatly loaded with blood. A number of examples of considera- ble increase of bulk of the ganglia of the sympathetic, from the influence of chronic irritation, are recorded. The enlargement which has been known to exceed six or eight times the normal size, is met with chiefly in the cervical ganglia ; but, occasionally, it has been seen in those of the thorax and pelvis. A remarkable case of hypertrophy of these bodies, probably produced by chronic inflammation, has been published by Professor Cruveilhier, which he ob- served in a subject in the dissecting- room of the " Ecole Pratique," of Paris, and concerning the previous history of which nothing whatever could be learned. All the cervical ganglia of the left side were enormously enlarged, especially the middle, which was two inches and a half in length by one inch in thickness, (Fig. 48.) They were of a grayish white color, and of a very dense, compact consistence, creaking very sensibly under the knife. On further examination, they were found to. * Treatise on the Structure, Func
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