BACILLUS TUBERCULOSLS 



365 



ing to Baumgarten and others in this, that they stain in 

 alkahne methylene blue with conspicuously greater difficulty 

 than the tubercle bacilli. 



Neisser has shown that the characteristic leprosy cells are 

 only wandering cells or leucocytes modified by the growth 

 and multiplication in them of the bacilli. In the blood the 

 bacilli do not occur, and they spread probably only by way 

 of the lymphatics. 



^ eMi^ 





s>.. 



- ""^i 



^^M 



Fig 145. — From a Section through a Nodule of the Lu'er of Rhea. 

 I. Cells of various sizes filled with minute bacilli; owing to the .smallness of the 

 bacilli and to their being crowded in the cells and owing to the comparatively 

 low magnifying power (300) the bacilli appear like dots. 



(Stained with fuchsin and methyl-blue.) 



Inoculation experiments on domestic animals and monkeys 

 have hitherto failed.^ Damsch - maintains, however, that 

 he was able, by inoculation with leprous tissue into the 

 peritoneal cavity and into the skin, to produce in cats a 

 distinct increase and sprouting of the bacilli. 



^ Kubner, Virthoivs Ai\-hh\ vol. Ixxxviii. j ?Iansen, ibidem^ vol. xc. 

 2 Virchotv s Archiv^ vo], xcii. 



