LOUPING-ILL. 



561 



what cylindrical outline, slightly rounded at the extremities, 

 with a bright line (due to refraction) running down the centre, 

 and slightly swollen out at either end. (The appearance of this 

 line is less given by the drawing than are the other characters.) 

 The middle part of each rod is a little constricted, but much less 

 so than Bacterium tcrmo ; its length is about midway between 

 that of Bacterium termo and of Bacillum anthracis, and the 

 roundins of its ends is also intermediate between these two, but 

 more nearly approaching the characters of the latter. 



Fig. 32. 



Cultivation from Spinal Fluid. 



(Drawing by Dr. Jas. Hunter, 1882.) 



The character of the chains or rows of rods may be seen in 

 figs. 32 to 35, the former under 600 diameters, showing the general 

 appearance of single and double rows, the latter of double rows 

 luider a higher power (1200) and in various stages of detachment. 



These chains present yery much the appearance seen in many 

 low forms of vegetable life, only differing in point of size. 

 Figure 32 shows that in the double rows, so long as the rods are 

 in lateral contact, clear division lines mark the chains trans- 

 versely at intervals corresponding to the lengths of two rods, 

 and that also less distinct cross lines are visible midway between 

 these, marking off each bundle, as it were, into four. The single 



2 



