594 PLEUEO-PNEUMONIA. 



3714 in Swabia, and also in several cantons of Switzerland." 

 The same author alludes to its attacks in the same countries 

 in 1726, 1727, 1736, and 1739. Even less doubt, if any 

 there might exist, hangs over the outbreak in 1743, and, 

 indeed, we find that from this period onwards, the lung dis- 

 ease never ceased to commit extensive ravages. The im- 

 mortal Haller writes very positively as to the nature of the 

 disorder.* He says : " It is a lung disease, beginning in an 

 inflammation, which passes into gangrene, or at other times 

 in abscess, and ends in a true marasmus." " It is very won- 

 derful/' he adds, " that amongst the many modern physicians 

 who have written on this plague, which has been observed so 

 generally and for so long, that they have not noticed the seat 

 of the disease to be in the lungs." Such an observer as 

 Haller could not help writing a faithful description of the 

 malady, and he affords us incontestible proof that the 

 epizootic which spread during his lifetime over Europe, as 

 generally, perhaps, as it has extended in modern days, was 

 the contagious pleuro-pneumonia. 



The history of the contagious typhus, or steppe disease, is 

 interwoven, to a great extent, with the history of pleuro- 

 pneumonia, during the middle of last century. The ravages 

 of the two, spreading each from the countries in which they 

 are capable of spontaneous development, are readily accounted 

 for, by the commotion due to wars and rebellion, and by the 

 necessary transport of cattle in the rear of armies. The cattle 

 trade was always active from east to west, and, after a most 

 anxious study, with a view to trace separately and distinctly 

 the course of the contagious typhus and pleuro-pneumonia. 

 I can only arrive at the conclusion which Dr Headlam G-reen- 



* A bhandlung von der Viehseuche. Von HERRN ALB. HALLER. Bern. 

 1773. This is the ablest memoir I have read concerning pleuro-pneu- 

 monia during the eighteenth century. 



