AND ITS RELATION TO ANIMAL LIFE II 



where the products of breathing have been 

 allowed to accumulate " 



It is clear from the above that anaemia is 

 the cause of, or at least a predisposing factor 

 in, many diseases, and it is no doubt the con- 

 stant factor in various diseases to which Rind- 

 fleisch refers in the passage quoted above. 



It being once admitted that the percentage of 

 oxygen absorbed into the system varies in 

 about the same ratio as the percentage of 

 haemoglobin in the blood, it becomes of interest 

 to see how oxygen effects pathogenic bacteria. 



Encyclopaedia Britannica, vol. xxi. p. 400, 

 under " Schizomycetes " 



" The investigations of Cohen, Pasteur, 

 Kock and others leave no doubt that many 

 bacteria are sensibly affected by the media 

 in which they are cultivated ; not only are the 

 forms modified, but also the physiological 

 activity varies in degree and even in kind. 

 The lung tissues of a healthy animal exert 

 actions which are antagonistic to those of the 

 parasite invader, and it is now generally 

 admitted that the mere admission of bacteria 



