44 SEPTICAEMIA IN CHICKENS 



As already stated the lesions in this disease are so exceed- 

 ingh' variable that, in addition to the more typical pneumonia, 

 almost any modification can be found. The detailed descrip- 

 tion of many of these variations as described by Dieckerhofif 

 are worthy of careful study. 



§34. Differential diagnosis. This disease is to be dif- 

 ferentiated from ( I ) influenza, with which it is often confused, 

 (2) simple pneumonia following colds, and (3) the result of 

 foreign substances introduced into the V:)ronchi. 



REFERENCES. 



1. Cadeac. Contribution a I'etiologie de la pneumonia contagieuse 

 du cheval. Conip. Rend, de la Soc. de Biol. 1889. p. 316. 



2. Fleming. Infectious pneumonia of the horse. The Velerinary 

 Jour. Vol. XXXIII p. I. 



3. SchIttz. Die Ursache der Brustseuche der Pferde. Virchow's 

 Archives. Bd. CVII. S. 356. 



4. SCHUTZ. Die genuine Lungenentziindung der Pferde. Archiv 

 fur Wissen. u. prak. Thierheilkunde. Bd. VIII. 



5. SiEDAMGROTZKY. Ueber infectiose Pneumonien bei Pferden. 

 Deutsche Med. Wochenschrifl. 18S2. S. 668. 



6. Williams. Contagious pleuro-pneumonia of the horse. Am. 

 Vel. Reviexv. Vol. XVI ( 1892) p. 301. 



APOPLECTIFORM SEPTICAEMIA IN CHICKENS. 



§ 35. Characterization. A rapidly fatal septicaemia 

 in chickens caused by a streptococcus. 



§ 36. History. This disease was recently discovered 

 and described by Norgaard and Mohler. xA-lthough the symp- 

 toms and lesions given correspond somewhat closel}' to those 

 mentioned by Mazza and Rabieux, there is a marked differ- 

 ence in the etiological factor. This newly discovered disease 

 is based upon the findings and investigations following a 

 single epizootic among fowls. Thus far it has not been identi- 

 fied in any other locality. 



§ 37. Geographical distribution. The only locality 

 from which it has been described is lyOudoun Co., Va. 



^ 38. Etiology. This disea.se is stated to be due to a 

 streptococcus which grows in short or longer chains with seg- 

 ments varying from 0.6 to cSyw in diameter. In some cases 



