114 PLANT DISEASE 



tain foods have been ordered, it is usually 

 considered sufficient to specify the food, with- 

 out consideration of the fact that its chemi- 

 cal constituents vary, as I have elsewhere 

 shown, to an enormous extent, and any recog- 

 nized want of the patient's constitution is 

 supplied by drugs. 



Report of Leprosy Commission in India, 

 1890-91, p. 333- 



" Foods must necessarily modify the con- 

 stitution of the tissues, and may do so in such 

 a way as to prepare them to respond at once 

 to the introduction of microbes against which 

 they would have proved refractory or insus- 

 ceptible." 



On the same page, Dr. E. Klein says 

 " Insusceptibility of the tissues is, as is 

 well known, considered by some authorities 

 to be connected with, if not wholly dependent 

 on, the chemical nature of the tissues ; so that 

 while the tissues are normal or in full vigour 

 (if the phrase may be allowed for the purpose 

 of illustrating my meaning) a particular 

 microbe getting access to them fails to thrive 



