AND ITS RELATION TO ANIMAL LIFE 139 



certain diseases ; then other foods deficient in 

 nitrogen and fats will be poor foods conducive 

 to many diseases. 



And that such poor foods do exist the world 

 over is proved by the fact that doctors are 

 constantly giving patients iron, cod-liver oil, 

 quinine, etc. In plain English, they are try- 

 ing to supply to the blood iron and materials 

 to make proteids and fats by means of various 

 drugs, that would be supplied by normal 

 foods much more effectively than by any 

 drugs. 



In fact, no drugs can ever take the place of 

 normal foods, as nature requires the proteids 

 to be supplied daily by the food, and if the 

 food is deficient in these important consti- 

 tuents, then the animal economy must also be 

 deficient. 



FRUIT TREES AND CHLOROSIS 



It is admitted that chlorosis is one of the 

 most prevalent diseases of the vegetable 

 world, and I have found it specially rife in the 

 orange tree in South Africa. 



Unless the trees have been more or less arti- 

 ficially manured I do not think it possible to 



