Fig. I, 



Fig. 2. 



Culture of Micrococus from diseased Cabbage Worm (Pieris rapx L.), in test tubes of sterilized beef 

 broth, commenced October 20, 1883 (see p, 275). Preserved over winter in plugged test tube, and 

 slides mounted April 10, 1884, in carbolized water, after staining with brown aniline. 



Photographed with lamplight by Dr. II. J. Detmers, with Spencer jo homogeneous immersion, X 1000. 



Both figures are from different parts of the same slide, differing only in focal adjustment,— figure 1 being 

 a " positive," and figure 2a" negative." 



