conspectus: morphology and cultural characters 39 



Fig. 25. — Surface and buried colonies of Bacterium lachrymans Sm. and Bry., 

 on thin-sown plates: A. Peptone-beef gelatin ( + 10). Plate poured May 12, 

 1915. Photographed May 19 with oblique lighting to show the peculiar margin 

 &tx. X 14. B. Peptone-beef agar ( + 15). Photographed by direct transmitted 

 light to show the internal structure of the smooth white surface colonies. Plate 

 poured August 6, 1916. Photographed August 9. X 14. 



