Explanation of Plate 14. 



BACTERIUM COLI COMMUNE. Escherich. 



I. Gelatin stick culture, ten days at 22. 

 II. Gelatin streak culture, four days at 22. In na- 

 ture, transparent and iridescent like mother-of- 

 pearl. Vide PI. 16, VI. 



III. Agar streak culture^ four days at 22. Vide PI. 



16, V. 



IV. Agar stick culture, two days at 22. Puncture 



canal. 

 V. Agar stick culture, two days at 22. Surface. 



VI. Agar plate, four day sat 22. x60. Deep-seated 

 colonies. Vide PL 13, VI. 



VII. Agar plate, four days at 22. x60. A part of a 

 superficial colony. During growth occasionally 

 exhibits forms like bacillus acidi lactici. Vide 

 PL 13, VI. ; PI. 17, V., VI. ; PI. 18, IV. ; PI. 

 12, VIII. 

 VIII. Agar plate, three days at 22. Natural size. 



IX. Potato culture, five days at 22. May also ap- 

 pear of a lighter or darker color. 

 X. Bacteria with long flagella from bacterium bras- 

 sicse acidse. xl?000. Stained according to 

 Lomer's method. 



XI. Bacteria with flagella, from the bacterium of pig- 

 eon diphtheria, x 1,000. Stained by Loffler's 

 method. 



XII. Bacteria with one flagellum, rarely with two fla- 

 gella, from bacterium of the deer plague. 

 X 1, 000. Stained by Loffler ' s method. 



