THE MICROBES OF HUMAN DISEASES. 237 



that it is readily and spontaneously self-inoculated, 

 and that boils and carbuncles rarely occur singly 

 in the same individual. Diabetic 

 patients are very subject to this 



affection, yet the microbe does not "* 



Fig. 99. Boil microbe 



admit of culture in sugared water. (staphyiococcui n/o- 



genus aurtus: Rosen- 



Phlegmon. This is the name given bad ')- 

 to the suppuration of the subcutaneous cellular tissue, 

 caused by contusions, wounds, and medical injections 

 of morphia or any other sub- 

 stance. Microbes are always 

 found associated in 8's or in 

 long sinuous chains 

 100). In all these cases 

 has been some communica- 

 tion with the outer air, for 

 wounds which are really sub- 

 cutaneous fractures, for ex- 



<*r>nnm Fig. 100. Pus of phlegmon, contain- 

 aCCOm- ing chains of micrococci (x 1000 



panied by abundant haemorr- 



hage, heal without suppuration, and microbes are not 



present. 



XVII. MODE OF ACTION OF MICROBES IN DISEASE. 

 PTOMAINES. 



The question how microbes act in disease has long 

 been doubtful, but the progress of science tends to 

 clear away obscurity. 



