244 OZONE. 



of ozone, and as a rule it does not exist around them. 

 They are admitted to l)e unhealthy places, especially in 

 times of dysentery or cholera morbus. 



In the English cattle-disease of iS66 almost all the cat- 

 tle died in hnv situations and about the cities where there 

 was no ozone ; but in the hill country where ozone was 

 four on a scale of ten, few if any died. The Highlands 

 of Scotland were not onl} free from the cattle-disease but 

 free from cholera, with ozone at four and one half. Tiiis 

 was certainly a peculiar coincidence if ozone had nothing 

 to do with it. On the other hand we find that sea breezes 

 of New Enghuul arc more strongly impregnated than the 

 atmosphere inland, and such sea breezes are a disadvan- 

 tage to consumptives, and arc productive of much ca- 

 tarrh. Diphtheria in Europe and America has always 

 appeared as an epidemic when ozone has been above five 

 in ciur scale, or at its maximum ; and as the amount of 

 ozone has decreased, this disease has not only decreased 

 in fatality but in frequency also. 



But as you all have the same access to authors on the 

 subject that I have, I w ill not bring forward illustrations 

 from them but speak of my own experience. Firs^ : that 

 from three to five has shown a general state of health. 

 Second : that below* that standard choleraic diseases with 

 dysentery among children have predominated. Third : that 

 above that standard catarrhal and inflammatory diseases 

 have taken precedence, yet during all this period now 

 and then a case would appear in contradiction, or in other 

 words the classification has not been exclusive. 



But let us review this period. In 1871, in January and 

 February there was a medium amount of ozone, with now 

 and then sickness from special causes, but nothing that 

 would seem to dej^art from what would be termed a 

 healthy condition, until March, which was peculiar for 



