127 



of i lie post-mortem examinations made by him, more or lees lisease 

 of the glands of Peyer was found."* The typhus epidemics b 



brought into contrast by Dr. Kennedy, happily illustrate a well 

 known law of epidemics, namely, that the same popular die - 

 varies in its form and anatomical lesions in different years and B .- 

 sons. There can he no question that the two epidemics of whi 



speaks were essentially the same in their nature, and the di;. 

 ence in the condition of the intestinal canal in the two epi 



J i] ' iital. certain influences in l v ^o operating to produce "i 

 a large proportion" of the eases, "more or less disease of the gl; 

 of Peyer:'" whereas, in 1837-38, the analogous modifying innues - 

 occasioned scarcely any organic changes in th>.- Is. but chiefly 



a different complies " ogestion of the vessels : the mem- 



branes of the brain."' 



Dr. M'Gormac, of B< U st, who evinces in his work on f t _:eat 

 familiarity with, the diseases of Ireland, after minutely 

 the various changes which take place in the agg 2 and e 



follicles of the intestines, remarks: "This -xanthem, if we n. 

 it so. d( es d I i resent the regular phases seen in small-pox: i: : 

 exist during the great i :tion of the dis - . and even after the 



or has terminated.'' And he adds, "after what I have said, 1 



1 hardly repeat again, that f j ther with its results, it is only 



an occasional contingency in fever, and seemingly mo: cent on 



the continent than in this <:•■ nntry — from what cause, however, if it 



be this, I do not pretend to say." 



Dr. Stokes, of Dublin. :". m there ;. sicians ...ore 



capable of arriving at correct conclusions on pathological subje -. 

 regards "typhus as an essential fever which affects in an ecial 

 manner in different cases, and during different epidemics, either the 

 head, the chest, or the a' men.' 1 He alleges thai "the olcerati »ns 

 of the intestines so much insisted upon by the French pathologists, 

 are neither of constant occurrence, nor are they characteristic of 

 disease: in one epidemic they are found on dissection, much in- 

 frequently than in another. "f Dr. Graves, :he able colleague of 

 Dr. Stokes at the Meath Hospital, entertains the same view of fch 

 nature of typhus. 



In accordance with these opini ins, are the extensive observations 



* Medical Report of the House of Recovery and Fever Hospital, Cork Street. Dublin. 

 By G. A. Kennedy. A.M . M.D., Dublin, 1S39. 

 j Medico-Chirurgical Revie ■ ' - p. 71. 



